Question

How to turn a fraction into a whole number ?

Answer 1

You mean an improper fraction?

We can divide it, like if we have 9/4:
  _2_
4| 9
   8
   1

'2' becomes the whole number, '4' becomes the denominator, and '1' becomes the numerator.

So we have:

2 1/4

Answer 2

When you are writing down a fraction like 6/2 is the same way of saying 6÷2=3
Or 16/4 you put it as 16÷4=4 so when you are turning a fraction into a whole number you need to make sure the numerator is divisible by the denominator.
Hope I helped!