$$(\frac{2}{3})^{6}\cdot(\frac{2}{3})^{0}\cdot(\frac{2}{3})^{-3}(\frac{81}{18})^{-2}$$
$\frac{32}{2187}\approx 0.014631916$
$$\left(\frac{2}{3}\right)^{6}\times \left(\frac{2}{3}\right)^{-3}\times \left(\frac{81}{18}\right)^{-2}$$
$$\left(\frac{2}{3}\right)^{3}\times \left(\frac{81}{18}\right)^{-2}$$
$$\frac{8}{27}\times \left(\frac{81}{18}\right)^{-2}$$
$$\frac{8}{27}\times \left(\frac{9}{2}\right)^{-2}$$
$$\frac{8}{27}\times \frac{4}{81}$$
$$\frac{32}{2187}$$
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$\frac{2 ^ {5}}{3 ^ {7}} = 0.014631915866483767$
