diff --git a/index.html b/index.html
index d3070f2..ebaeeff 100644
--- a/index.html
+++ b/index.html
@@ -10,6 +10,10 @@
   function plus (a, b) {
     return a+b;
   }
+
+  function product(a, b) {
+    return a*b;
+  }
 </script>
 </body>
 </html>