diff --git a/README.md b/README.md
index e92e8c5..451c7ee 100644
--- a/README.md
+++ b/README.md
@@ -42,3 +42,4 @@
 8 - 41 = -33
 68 - 37 = 31
 52 / 7 = 7
+81 / 9 = 9