$$\frac{ 32 }{ 40 } \times \frac{ 15 }{ 12 } \times \frac{ 4 }{ 5 }$$
$\frac{4}{5}=0.8$
$$\frac{4}{5}\times \frac{15}{12}\times \frac{4}{5}$$
$$\frac{4}{5}\times \frac{5}{4}\times \frac{4}{5}$$
$$\frac{4}{5}$$
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$\frac{2 ^ {2}}{5} = 0.8$
