# https://www.codewars.com/kata/514b92a657cdc65150000006/train/python
"""
If we list all the natural numbers below 10 that are multiples of 3 or 5, we get 3, 5, 6 and 9. The sum of these multiples is 23.

Finish the solution so that it returns the sum of all the multiples of 3 or 5 below the number passed in.

Note: If the number is a multiple of both 3 and 5, only count it once.
"""


def solution(number):
    return [sum(n for n in range(0, number) if n % 3 == 0 or n % 5 == 0)][0]
