$$\frac{15}{4}\times15$$
$\frac{225}{4}=56.25$
$$\frac{15\times 15}{4}$$
$$\frac{225}{4}$$
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$\frac{3 ^ {2} \cdot 5 ^ {2}}{2 ^ {2}} = 56\frac{1}{4} = 56.25$
