diff --git a/README.md b/README.md
index 0b01b9c..4b9a2b6 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 74 - 40 = 34
 44 * 58 = 2552
 4 - 68 = -64
+94 - 90 = 4