$$7/5 \times 9/7$$
$\frac{9}{5}=1.8$
$$\frac{\frac{7\times 9}{5}}{7}$$
$$\frac{\frac{63}{5}}{7}$$
$$\frac{63}{5\times 7}$$
$$\frac{63}{35}$$
$$\frac{9}{5}$$
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$\frac{3 ^ {2}}{5} = 1\frac{4}{5} = 1.8$
