diff --git a/README.md b/README.md
index 6ceda38..1a98603 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 33 + 84 = 117
 80 + 31 = 111
 34 / 9 = 3
+36 - 78 = -42