When dividing a number by 10, the decimal is moved one place to the left, so the answer is 0.875.
In general, when dividing or multiplying by a multiple of 10, the number of zero's tells you how many places to move the decimal point. If dividing, it moves to the left, if multiplying it moves to the right. For example:
100(21.5632) = 2156.32
(21.5632)/100 = 0.215362
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