You can use your calculator if you have one or do long division. just make sure to move the decimal so it looks like this: 63 divided by 7. you answer should be 9
Move the the decimal point one place to the right so its easy on you so instead on 6.3 it would be 63 and instead of 0.7 it would be 7 after you have divided 63 by 7 which you get 9.
The only reason you moved to decimal point is to make it easier for you to divide if you dont have a calculator