diff --git a/Calculator.java b/Calculator.java
index c15927d..e00ca35 100644
--- a/Calculator.java
+++ b/Calculator.java
@@ -9,4 +9,5 @@ public static int minus(int a, int b) {
   public static int multiplication(int a, int b) {
     return a * b; // comment
   }
+sum.
 }