The best way will of course be to use a calculator.
However, for those who are new to simplifying of mixed numbers, you can simplify bit by bit slowly and show how the process is similar to that of normal simplification.
318 / 60
= 5 18/60
= 5 6/20
= 5 3/10
480 / 60
= 8
For the second one, since it is a whole number, you can just leave it be. There is no need to make it looks like a mixed fraction.