diff --git a/maths/special_numbers/a_very_big_sum.py b/maths/special_numbers/a_very_big_sum.py
new file mode 100644
index 000000000000..9496b88bea85
--- /dev/null
+++ b/maths/special_numbers/a_very_big_sum.py
@@ -0,0 +1,20 @@
+def a_very_big_sum(arr: list[int]) -> int:
+    """
+    Return the sum of all integers in the input array.
+
+    >>> a_very_big_sum([2, 4, 6])
+    12
+    >>> a_very_big_sum([])
+    0
+    """
+    total = 0
+    for i in arr:
+        total += i
+    return total
+
+
+if __name__ == "__main__":
+    # Example usage
+    arr = [2, 4, 6, 2, 4, 6, 3]
+    result = a_very_big_sum(arr)
+    print(f"Sum of {arr} is {result}")