$$(\frac{3}{4})^{2}*\frac{3}{5}+\frac{1}{2}$$
$\frac{67}{80}=0.8375$
$$\frac{9}{16}\times \frac{3}{5}+\frac{1}{2}$$
$$\frac{9\times 3}{16\times 5}+\frac{1}{2}$$
$$\frac{27}{80}+\frac{1}{2}$$
$$\frac{27}{80}+\frac{40}{80}$$
$$\frac{27+40}{80}$$
$$\frac{67}{80}$$
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$\frac{67}{2 ^ {4} \cdot 5} = 0.8375$
