diff --git a/README.md b/README.md
index 391212a..a8e51f4 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 64 * 14 = 896
 68 / 4 = 17
 81 + 69 = 150
+39 + 1 = 40