demerphq,
I am not sure how large your numbers are, so the following approach may not be what you need/want: If I get a chance, I might even try and implementation.

Cheers - L~R

In reply to Re: Best way to make sure a number is an even multiple of another? by Limbic~Region
in thread Best way to make sure a number is an even multiple of another? by demerphq

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