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diff --git a/challenge-243/lubos-kolouch/python/ch-2.py b/challenge-243/lubos-kolouch/python/ch-2.py
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+++ b/challenge-243/lubos-kolouch/python/ch-2.py
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+#!/usr/bin/env python
+
+import math
+from typing import List
+
+
+def floor_sum(nums: list[int]) -> int:
+    """
+    Calculate the sum of floor division results for every combination of elements in the array.
+
+    Args:
+    nums (List[int]): A list of positive integers.
+
+    Returns:
+    int: The sum of the floor division results.
+    """
+    return sum(
+        math.floor(nums[i] / nums[j])
+        for i in range(len(nums))
+        for j in range(len(nums))
+    )
+
+
+# Tests
+assert floor_sum([2, 5, 9]) == 10
+assert floor_sum([7, 7, 7, 7, 7, 7, 7]) == 49