1
general::
Phrase(s): multiply by something
to use the arithmetic process of multiplication to expand numerically a certain number of times. • To get the amount of your taxes, multiply by .025. • Can you multiply by sixteens?, Phrase(s): multiply something by something
to use the arithmetic process of multiplication to expand numerically a particular number a certain number of times. • Multiply the number of dependents you are claiming by one thousand dollars. • Multiply 12 by 16 and tell me what you get.
McGrawhill's American Idioms And Phrasal Verbs