diff --git a/README.md b/README.md
index 744d529..f68f5e1 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 94 - 90 = 4
 95 * 51 = 4845
 43 * 97 = 4171
+60 - 51 = 9