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general::
Phrase(s): divide by something
to perform mathematical division by a particular number. • Can you divide by sixteens? • Add this figure to the next column and divide by twenty., Phrase(s): divide something by something
to perform mathematical division on something, using a particular number. • Now, divide this sum by the figure in column seven. • Can you divide 1,400 by 59?
McGrawhill's American Idioms And Phrasal Verbs