$$64 \times 5 \times 2 \div { 2 }^{ 2 } \div 2=$$
$80$
$$\frac{64\times 5\times 2}{2^{2}\times 2}$$
$$\frac{5\times 32}{2}$$
$$5\times 16$$
$$80$$
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$2^{4}\times 5$
