$$-7(-9)-7+\frac{3}{8}\div\frac{7}{5}7\div[-\frac{4}{5}]$$
$\frac{1717}{32}=53.65625$
$$63-7+\frac{\frac{\frac{3}{8}}{\frac{7}{5}}\times 7}{-\frac{4}{5}}$$
$$56+\frac{\frac{\frac{3}{8}}{\frac{7}{5}}\times 7}{-\frac{4}{5}}$$
$$56+\frac{\frac{3}{8}\times \frac{5}{7}\times 7}{-\frac{4}{5}}$$
$$56+\frac{\frac{3\times 5}{8\times 7}\times 7}{-\frac{4}{5}}$$
$$56+\frac{\frac{15}{56}\times 7}{-\frac{4}{5}}$$
$$56+\frac{\frac{15\times 7}{56}}{-\frac{4}{5}}$$
$$56+\frac{\frac{105}{56}}{-\frac{4}{5}}$$
$$56+\frac{\frac{15}{8}}{-\frac{4}{5}}$$
$$56+\frac{15}{8}\left(-\frac{5}{4}\right)$$
$$56+\frac{15\left(-5\right)}{8\times 4}$$
$$56+\frac{-75}{32}$$
$$56-\frac{75}{32}$$
$$\frac{1792}{32}-\frac{75}{32}$$
$$\frac{1792-75}{32}$$
$$\frac{1717}{32}$$
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$\frac{17 \cdot 101}{2 ^ {5}} = 53\frac{21}{32} = 53.65625$
