$$(\frac{5}{8})^{-7}\times(\frac{8}{5})^{-5}$$
$\frac{64}{25}=2.56$
$$\frac{2097152}{78125}\times \left(\frac{8}{5}\right)^{-5}$$
$$\frac{2097152}{78125}\times \frac{3125}{32768}$$
$$\frac{64}{25}$$
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$\frac{2 ^ {6}}{5 ^ {2}} = 2\frac{14}{25} = 2.56$
