Example:
39∗45
Switch on of the fractions.
45⇒54
Now multiply,
39∗54=512
So 512 Is the final answer.
You turn the second one upside down and change the divide to a multiply.
Dragon - why don't you do a proper example? NOTE It is division that is asked for!
Well, that is how my teachers taught me. They told me how to do it, and the way of how I did it is how they taught me.