do the math
US /duː ðə mæθ/
UK /duː ðə mæθ/
1.
算一下, 计算一下
to calculate or consider the facts and figures to understand the implications or outcome of a situation
:
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If you work 60 hours a week at that pay, do the math – you're barely making minimum wage.
如果你每周工作60小时，工资是那样，算一下——你几乎没挣到最低工资。
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She said she could afford it, but when I did the math, it just didn't add up.
她说她能负担得起，但当我算了一下，数字根本对不上。