you do the math

(you) do the math

Figure out or put together the information for yourself. Do the math—can't you see that he's just using you to get ahead in the company? What happened? They convinced you to give them a lump sum as an "investment," and now they've cleared out of town. You do the math.
See also: math

you do the math

AMERICAN
People say you do the math to mean that the person they are talking to should calculate something because the answer will be interesting, important or surprising. In Canada, a country of more than 30 million people, a novel is considered to have sold respectably if three thousand copies leave the shelf. You do the math.
See also: math
References in periodicals archive ?
So if you do the math, you will realize there are lots and lots of unused numbers.
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