A/Wall if you have 20 and 30 that box is missing # so you will need to times and you will get something like this 20×30=60 and that's the missing #
B/Its going to be about 768 so you need to times and if you don't get 768
Im guessing you meant improper. This means that the numerator is greater than the denominator. An example is 11/4
Tbh I don’t know and I hope someone gives you the answer
