Answer:
By multiplying it by the reciprocal.
½÷⅑
½*9
9/2
4.5
Multiply the fraction on the left hand side by the reciprocal of the fraction on the right hand side.
OR
look at the picture above (I hope it helps you in a way)
The method shown in the picture is always correct, it never fails.
Hope this helps ;) ❤❤❤