$$(-\frac{4}{5})^{3}\times(-\frac{4}{5})^{5}$$
$\frac{65536}{390625}=0.16777216$
$$\left(-\frac{4}{5}\right)^{8}$$
$$\frac{65536}{390625}$$
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$\frac{2 ^ {16}}{5 ^ {8}} = 0.16777216$
