Simplify the Expression and Eliminate Any Negative Exponent(s) $\frac { \left( 64 y ^ { 6 } z ^ { - 12 } \right) ^ { - 1 / 6 } } { \left( 32 y ^ { - 5 } z ^ { 10 } \right) ^ { 1 / 5 } }$

Short Answer

Simplify the expression and eliminate any negative exponent(s). Assume that all letters denote positive numbers. $\frac { \left( 64 y ^ { 6 } z ^ { - 12 } \right) ^ { - 1 / 6 } } { \left( 32 y ^ { - 5 } z ^ { 10 } \right) ^ { 1 / 5 } }$