diff --git a/src/main/java/resources/CalculatorResource.java b/src/main/java/resources/CalculatorResource.java
index 8abfbc218cfb22be068d6dc425910ec9d596d9fb..fa9cb6889a8d3fde53cf2465e15e2ca06e605ba8 100644
--- a/src/main/java/resources/CalculatorResource.java
+++ b/src/main/java/resources/CalculatorResource.java
@@ -39,6 +39,8 @@ public class CalculatorResource {
          */
         if(expressionTrimmed.matches("[0-9]+[+][0-9]+")) result = sum(expressionTrimmed);
         else if(expressionTrimmed.matches("[0-9]+[-][0-9]+")) result = subtraction(expressionTrimmed);
+        else if(expressionTrimmed.matches("[0-9]+[*][0-9]+")) result = multiplication(expressionTrimmed);
+        else if(expressionTrimmed.matches("[0-9]+[/][0-9]+")) result = division(expressionTrimmed);
 
         return result;
     }