diff --git a/easy/divisible_and_non_divisible_sums_difference.py b/easy/divisible_and_non_divisible_sums_difference.py
new file mode 100644
index 0000000..24efc1e
--- /dev/null
+++ b/easy/divisible_and_non_divisible_sums_difference.py
@@ -0,0 +1,8 @@
+# https://leetcode.com/problems/divisible-and-non-divisible-sums-difference
+
+class Solution:
+    def differenceOfSums(self, n: int, m: int) -> int:
+        l = n // m
+        s = sum(range(n + 1))
+        return s - (m + m * l) * l
+