$$71/2 \times 31/5=$$
$\frac{2201}{10}=220.1$
$$\frac{\frac{71\times 31}{2}}{5}$$
$$\frac{\frac{2201}{2}}{5}$$
$$\frac{2201}{2\times 5}$$
$$\frac{2201}{10}$$
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$\frac{31 \cdot 71}{2 \cdot 5} = 220\frac{1}{10} = 220.1$