Calculați valoarea lui $a$, unde

$$a={(-\frac{1}{3})}^{32}:{(-\frac{1}{3})}^{30}\cdot (-6{)}^2\mathrm{.}$$

$$a=\left(-\frac{1}{3}\right)^{32} : \left(-\frac{1}{3}\right)^{30}\cdot(-6)^2.$$