do the math
US /duː ðə mæθ/
UK /duː ðə mæθ/

1.
fare i conti, calcolare
to calculate or consider the facts and figures to understand the implications or outcome of a situation
:
•
If you work 60 hours a week at that pay, do the math – you're barely making minimum wage.
Se lavori 60 ore a settimana con quella paga, fai i conti – stai a malapena guadagnando il salario minimo.
•
She said she could afford it, but when I did the math, it just didn't add up.
Ha detto che poteva permetterselo, ma quando ho fatto i conti, semplicemente non tornava.