$$\frac{ 4 }{ 5 } + \frac{ 7 }{ 8 } \times \frac{ 3 }{ 2 } =$$
$\frac{169}{80}=2.1125$
$$\frac{4}{5}+\frac{7\times 3}{8\times 2}$$
$$\frac{4}{5}+\frac{21}{16}$$
$$\frac{64}{80}+\frac{105}{80}$$
$$\frac{64+105}{80}$$
$$\frac{169}{80}$$
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$\frac{13 ^ {2}}{2 ^ {4} \cdot 5} = 2\frac{9}{80} = 2.1125$
