When at anytime, do you have to use math unexpectedly?

Question

When at anytime, do you have to use math unexpectedly?

Answer 1

Drug calculations at work

Adding up shopping

Figuring out whether the bank has messed up my charges and interest again

Not falling for con credit card offers by knowing the loopholes

Managing general finances and budgeting other items

Answer 2

We use math every time, but mentally. Like we do a quick mental calculation etc. But people these days are lazy, so they just do a quick navigation on their cellphone and use calculator. Our brains are getting slower with these inventions.