Mr. Lopez owns a home that sits on 7/8 of an acre. He has decided to plow up 1/4 of the property to create a garden. What fraction of an acre did he plow up

In math, "of" almost always means "times".

"The property" is 7/8 acre.

So "1/4 of the property" means "1/4 times 7/8 acre".

1/4 x 7/8 = (1 x 7) / (4 x 8)

That's 7/32.

Mr. Lopez hasn't plowed up anything yet, but his plan is to plow up 7/32 acre for his garden.