Project Euler # 1

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.

Find the sum of all the multiples of 3 or 5 below 1000.

This one is pretty simple from the get-go.  Simply iterate through numbers  1..999  and check if they are a multiple of 3 or 5.  If they are, add them to the total.

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