diff --git a/pom.xml b/pom.xml
index b92b052..5abfe4b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project xmlns="http://maven.apache.org/POM/4.0.0"
-         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+        xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
 
     <groupId>com.zipcodewilmington</groupId>
@@ -48,6 +48,12 @@
             <version>4.12</version>
             <scope>test</scope>
         </dependency>
+    
+        <dependency>
+        <groupId>eu.tortitas.utils</groupId>
+        <artifactId>lib</artifactId>
+        <version>1.2.0</version>
+        </dependency>
     </dependencies>
 
 
diff --git a/src/main/java/com/zipcodewilmington/scientificcalculator/Console.java b/src/main/java/com/zipcodewilmington/scientificcalculator/Console.java
index 83f0e97..f374443 100644
--- a/src/main/java/com/zipcodewilmington/scientificcalculator/Console.java
+++ b/src/main/java/com/zipcodewilmington/scientificcalculator/Console.java
@@ -5,8 +5,36 @@
 /**
  * Created by leon on 2/9/18.
  */
+
+
 public class Console {
 
+    public static int add(int a, int b) {
+        int sum = a + b;
+        System.out.println(sum);
+        return sum;
+    }
+
+    public static int subtract(int a, int b) {
+        int difference = a - b;
+        System.out.println(difference);
+        return difference;
+    }
+
+    public static int multiply(int a, int b) {
+        int product = a * b;
+        System.out.println(product);
+        return product;
+    }
+
+    public static int divide(int a, int b) {
+        int quotient = a / b;
+        System.out.println(quotient);
+        return quotient;
+    }
+
+
+
     public static void print(String output, Object... args) {
         System.out.printf(output, args);
     }
@@ -23,10 +51,18 @@ public static String getStringInput(String prompt) {
     }
 
     public static Integer getIntegerInput(String prompt) {
-        return null;
+        Scanner scanner = new Scanner(System.in);
+        println(prompt);
+        Integer userInput = scanner.nextInt();
+        return userInput;
     }
 
     public static Double getDoubleInput(String prompt) {
-        return null;
+        Scanner scanner = new Scanner(System.in);
+        println(prompt);
+        Double userInput = scanner.nextDouble();
+        return userInput;
     }
 }
+
+
diff --git a/src/main/java/com/zipcodewilmington/scientificcalculator/MainApplication.java b/src/main/java/com/zipcodewilmington/scientificcalculator/MainApplication.java
index 5f42132..9d11de3 100644
--- a/src/main/java/com/zipcodewilmington/scientificcalculator/MainApplication.java
+++ b/src/main/java/com/zipcodewilmington/scientificcalculator/MainApplication.java
@@ -3,15 +3,67 @@
 /**
  * Created by leon on 2/9/18.
  */
+
+
 public class MainApplication {
-    public static void main(String[] args) {
-        Console.println("Welcome to my calculator!");
-        String s = Console.getStringInput("Enter a string");
-        Integer i = Console.getIntegerInput("Enter an integer");
-        Double d = Console.getDoubleInput("Enter a double.");
+    
+    public static int calculate(int a, int b, String operator) {
+        int result = 5;
+        switch (operator) {
+            case "+":
+                result = Console.add(a, b);
+                break;
+            case "-":
+                result = Console.subtract(a, b);
+                break;
+            case "*":
+                result = Console.multiply(a, b);
+                break;
+            case "/":
+                result = Console.divide(a, b);
+                break;
+            default:
+                System.out.println("Invalid operator");
+        }
+        return result;
+    }
+
+    
+    //     Console.println("");
+    //     String s = Console.getStringInput("Enter a string");
+    //     Integer i = Console.getIntegerInput("Enter an integer");
+    //     Double d = Console.getDoubleInput("Enter a double");
+    // }
+    
+    
+    // public static void main(String[] args, Object userInput, Object prompt, String operator) {
+        
+    //     if (userInput instanceof String) {
+    //         System.out.println();
+    //         String userInputStr = Console.getStringInput(prompt);
+    //         Console.println(userInputStr);
+    //     } else if (userInput instanceof Integer) {
+    //         System.out.println();
+    //         Integer userInputInt = Console.getIntegerInput(prompt);
+    //         Console.println(userInputInt);
+    //     } else if (userInput instanceof Double) {
+    //         System.out.println();
+    //         Double userInputDbl = Console.getDoubleInput(prompt);
+    //         Console.println(userInputDbl);
+    //     }
+    //     else {
+    //         System.out.println("Invalid input type");
+    //     }
+    //     System.out.println(prompt);
+    // }
 
-        Console.println("The user input %s as a string", s);
-        Console.println("The user input %s as a integer", i);
-        Console.println("The user input %s as a d", d);
+    public static void main(String[] args) {
+        String prompt = "Enter an operator (+, -, *, /): ";
+        String operatorInput = Console.getStringInput(prompt);
+        Integer num1Input = Console.getIntegerInput("Enter the first number: ");
+        Integer num2Input = Console.getIntegerInput("Enter the second number: ");
+        int result = calculate(num1Input, num2Input, operatorInput);
+        Console.println("Result: %d", result);
+        
     }
-}
+}
\ No newline at end of file
diff --git a/src/test/java/com/zipcodewilmington/scientific_calculator/TestMainApplication.java b/src/test/java/com/zipcodewilmington/scientific_calculator/TestMainApplication.java
index 94e8d98..451aac9 100644
--- a/src/test/java/com/zipcodewilmington/scientific_calculator/TestMainApplication.java
+++ b/src/test/java/com/zipcodewilmington/scientific_calculator/TestMainApplication.java
@@ -3,5 +3,37 @@
 /**
  * Created by leon on 2/9/18.
  */
+
+class Prompt {
+    private String prompt;
+    private String userInput;
+
+    public Prompt(String prompt, String userInput) {
+        this.prompt = prompt;
+        this.userInput = userInput;
+    }
+
+    public String getPrompt() {
+        return prompt;
+    }
+
+    public String getUserInput() {
+        return userInput;
+    }
+}
 public class TestMainApplication {
+
+
+    public static int add(int a, int b) {
+        int sum = a + b;
+        System.out.println(sum);
+        return sum;
+    }
+
+    public static int multiply(int a, int b) {
+        int product = a * b;
+        System.out.println(product);
+        return product;
+    }
+
 }