Find the reciprocal of $\frac{16}{125}$.

Find the reciprocal of $\frac{-27}{64}$.

Find the reciprocal of ${\left(-2\right)}^4$.

Find the reciprocal of ${\left(\frac{-3}{7}\right)}^2$.

Evaluate $b^2-9{\left(b-1\right)}^2$ if $b=1.1$.

Evaluate: $\left({12}^2-5^3\right)\times \frac{{\left(-1\right)}^{20}}{19}$

The multiplicative inverse of ${\left(\frac{1}{2}\right)}^4÷{\left(\frac{1}{3}\right)}^4+{\left(-\frac{1}{2}\right)}^3$ is

Write the reciprocal of $\frac{-1296}{625}$ in exponential form.