$$4\frac{3}{4}\cdot(2\frac{1}{5}+\frac{7}{8}-1\frac{1}{2})$$
$\frac{1197}{160}=7.48125$
$$\frac{16+3}{4}\left(\frac{2\times 5+1}{5}+\frac{7}{8}-\frac{1\times 2+1}{2}\right)$$
$$\frac{19}{4}\left(\frac{2\times 5+1}{5}+\frac{7}{8}-\frac{1\times 2+1}{2}\right)$$
$$\frac{19}{4}\left(\frac{10+1}{5}+\frac{7}{8}-\frac{1\times 2+1}{2}\right)$$
$$\frac{19}{4}\left(\frac{11}{5}+\frac{7}{8}-\frac{1\times 2+1}{2}\right)$$
$$\frac{19}{4}\left(\frac{88}{40}+\frac{35}{40}-\frac{1\times 2+1}{2}\right)$$
$$\frac{19}{4}\left(\frac{88+35}{40}-\frac{1\times 2+1}{2}\right)$$
$$\frac{19}{4}\left(\frac{123}{40}-\frac{1\times 2+1}{2}\right)$$
$$\frac{19}{4}\left(\frac{123}{40}-\frac{2+1}{2}\right)$$
$$\frac{19}{4}\left(\frac{123}{40}-\frac{3}{2}\right)$$
$$\frac{19}{4}\left(\frac{123}{40}-\frac{60}{40}\right)$$
$$\frac{19}{4}\times \frac{123-60}{40}$$
$$\frac{19}{4}\times \frac{63}{40}$$
$$\frac{19\times 63}{4\times 40}$$
$$\frac{1197}{160}$$
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$\frac{3 ^ {2} \cdot 7 \cdot 19}{2 ^ {5} \cdot 5} = 7\frac{77}{160} = 7.48125$
