Fix of expansion v

src/main/java/resources/CalculatorResource.java

@@ -52,11 +52,11 @@ public class CalculatorResource {
      */
     public int sum(String expression){
         String[] split = expression.split("[+]");
-        int length = len(split)
+        int length = len(split);
 
         for(int i = 0; i<length; i++){
             int number = Integer.parseInt(split[i]);
-            int sum += number
+            int sum += number;
         }
         return sum;
     }
@@ -68,33 +68,33 @@ public class CalculatorResource {
      */
     public int subtraction(String expression){
         String[] split = expression.split("[-]");
-        int length = len(split)
+        int length = len(split);
         
         for(int i = 0; i<length; i++){
             int number = Integer.parseInt(split[i]);
-            int result -= number
+            int result -= number;
         }
         return result;
     }
 
     public int multiplication(String expression){
         String[] split = expression.split("[*]");
-        int length = len(split)
+        int length = len(split);
 
         for(int i = 0; i<length; i++){
             int number = Integer.parseInt(split[i]);
-            int result *= number
+            int result *= number;
         }
         return result;
     }
 
     public int division(String expression){
         String[] split = expression.split("[/]");
-        int length = len(split)
+        int length = len(split);
 
         for(int i = 0; i<length; i++){
             int number = Integer.parseInt(split[i]);
-            int result /= number
+            int result /= number;
         }
         return result;
     }