Divide
12.8 divided by 0.64
Answer
20
Check
0.64 times 20
=12.8
Why?
If you multiply .64 by f, then you would get 12.8. So, you then have to divide 12.8 by 0.64. If you do that, you'll get 20 for your answer. To check, you just do the math equation like it is. Hope this helps!