$$(\frac{5}{4})^{-7}\times(\frac{8}{5})^{-1}$$
$\frac{2048}{15625}=0.131072$
$$\frac{16384}{78125}\times \left(\frac{8}{5}\right)^{-1}$$
$$\frac{16384}{78125}\times \frac{5}{8}$$
$$\frac{2048}{15625}$$
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$\frac{2 ^ {11}}{5 ^ {6}} = 0.131072$
