3/4 / 5/8

To divide two two fractions, multiply by the recriprocal of the second fraction.

Some people like to remember this by SKIP, CHANGE, FLIP.

And now just multiply the top and botoms together.

$$\begin{array}{l} \frac{3}{4} \times \frac{8}{5}\\\\ \frac{3\times8}{4\times5}\\\\ \frac{24}{20}\\\\ 1\frac{4}{20}\\\\ 1\frac{1}{5} \end{array}$$