Question

5 over 8 divided by 3 over 10 in simplest form

Answer 1

5/8 / 3/10 =
5/8 x 10/3=
50/24=
25/12

Answer 2

I'm assuming you're referring to fractions.

First, invert the 3/10. 
3/10 = 10/3

Then multiply.

5/8 • 10/3 = 50/24
50/24 = 25/12

5/8 ÷ 3/10 = 25/12