Math,algebra

Can someone explain to me how to solve the following.

Directions:Multiply and write the answer in simplest form.

4/10 divided by 10/4?

4/10 / 10/4

change to mulitpcation by flipping the last fraction:

4/10 * 4/10 = 8/20

8/20 = 4/10 = 2/5

luke,
I'm sorry i had a typo

it was 4/12 multiplied by 10/4

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