Perform the Indicated Operations Below, and Express the Answer in Its

Short Answer

Perform the indicated operations below, and express the answer in its reduced form. $\left( \frac { 32 b } { x ^ { 2 } v ^ { 2 } } \right) \div \left( \frac { 40 b } { x v } \right)$ (It may be necessary to enter the numerator and/or the denominator within parentheses.)