When a teacher says" 1+1 is 2 what is 2+2+22+2-9-0-8+3=? " do you know it straight off the back or do you ask a friend or use a

Use a calculator it doesn't get you in trouble as bad

To solve this problem, it is most likely that you would use a calculator because it is very unlikely that you would know a long problem like this just off the back of your head. And If you ask a friend, it is likely that they will not know the answer either. And so the only resource left to rely on is a calculator.