Basic Action Super Heroes!

I am not sure how this works exactly. I understand how falling damage works, but not how to mitigate the damage with Athletics

When you hit the ground, you can attempt an Athletics/ Acrobatics check to mitigate the falling damage. Your result/20 (discard any remainder) is added to your soak multiplier against the falling damage.

An example of this formula in action would be great.

I understand it like this: the hero falling has soak x2 and Athletics/Acrobatics x3. He falls down a roof and tries to migitate his fall rolling Acrobatics. He rolls an 8x3=24. He divides the total through 20 getting the result of 1. He discards the remaining 4 result of his Acrobatics roll and adds the result of 1 to his soak multiplier. So in the end he soaks with x3 multiplier.