diff --git a/README.md b/README.md
index 544c90c..12b6770 100644
--- a/README.md
+++ b/README.md
@@ -42,3 +42,4 @@
 2 / 10 = 0
 79 / 10 = 7
 18 / 10 = 1
+33 - 44 = -11