Re: [encoding] Fix #20: rather than relying on integer division, use floor() (929a3ff)

Can you give me two numbers where this matters? E.g., going from 201599 / 10 / 126 / 10 to 201600 / 10 / 126 / 10 seems fine. I suppose I should technically use more floor() though since it's supposed to all be integer division.

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