$$( \frac{ -2 }{ 5 } \times \frac{ -7 }{ 10 } \times \frac{ 5 }{ 7 } )$$
$\frac{1}{5}=0.2$
$$-\frac{2}{5}\times \frac{-7}{10}\times \frac{5}{7}$$
$$-\frac{2}{5}\left(-\frac{7}{10}\right)\times \frac{5}{7}$$
$$\frac{-2\left(-7\right)}{5\times 10}\times \frac{5}{7}$$
$$\frac{14}{50}\times \frac{5}{7}$$
$$\frac{7}{25}\times \frac{5}{7}$$
$$\frac{7\times 5}{25\times 7}$$
$$\frac{5}{25}$$
$$\frac{1}{5}$$
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$\frac{1}{5} = 0.2$
