Description: Sal shows that when there is a decimal divisor, you need to shift the decimal first and then divide.Created by Sal Khan and Monterey Institute for Technology and Education. Now the first thing you want to do when your divisor, the number that you're dividing into the other number, is a decimal, is to multiply it by 10 enough times so that it becomes a whole number so you can shift the decimal to the right. So every time you multiply something by 10, you're shifting the decimal over to the right once. So in this case, we want to switch it over the right once and twice.*Teacher Advisor is 100% free.