Explanation:
Division by any number is the same as multiplication by its inverse (reciprocal). In this case, ...
[tex]\dfrac{\left(\dfrac{3}{4}\right)}{2}=\dfrac{3}{4}\cdot\dfrac{1}{2}=\dfrac{3\cdot 1}{4\cdot 2}=\dfrac{3}{8}[/tex]
Multiplication of fractions is done in the usual way.