diff --git a/README.md b/README.md
index a7725a4..79d9256 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 48 / 8 = 6
 50 + 24 = 74
 39 - 19 = 20
+77 - 8 = 69