You shouldnt answer questions like that. Tell the people they should be able to calculate that themselves, cause they should. If they really are not, tell them how to multiply rational numbers in general and maybe do some even easier exercises with them, and they should be able answer it.
11/4=2.75x90=247.5 (if the asterisk is a multiplcations symbol)
use a dag on calculator > . <
You shouldnt answer questions like that. Tell the people they should be able to calculate that themselves, cause they should. If they really are not, tell them how to multiply rational numbers in general and maybe do some even easier exercises with them, and they should be able answer it.