diff --git a/README.md b/README.md
index ccb90d1..0be2401 100644
--- a/README.md
+++ b/README.md
@@ -41,3 +41,4 @@
 59 * 8 = 472
 8 + 23 = 31
 60 / 10 = 6
+13 + 86 = 99