$$8 \div \frac { 4 } { 9 } \div \frac { 5 } { 18 }$$
$\frac{324}{5}=64.8$
$$\frac{8\times 18}{\frac{4}{9}\times 5}$$
$$\frac{144}{\frac{4}{9}\times 5}$$
$$\frac{144}{\frac{4\times 5}{9}}$$
$$\frac{144}{\frac{20}{9}}$$
$$144\times \frac{9}{20}$$
$$\frac{144\times 9}{20}$$
$$\frac{1296}{20}$$
$$\frac{324}{5}$$
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$\frac{2 ^ {2} \cdot 3 ^ {4}}{5} = 64\frac{4}{5} = 64.8$
