go on the street and find a teenager that is able to do mental calculus... you will be lucky if you find some.
A teenager that is able to do mental calculus? Ha, many of them are even unable to tell the hour on a clock with hands! LoL
go on the street and find a teenager that is able to do mental calculus... you will be lucky if you find some.
A teenager that is able to do mental calculus? Ha, many of them are even unable to tell the hour on a clock with hands! LoL
ahah indeed one time i taught to read the clock to a 14 years old guy. I'm not joking
Hahaha, yeah! Indeed! I bet you are not joking.