$$\frac{ 11 }{ 5 } \times \frac{ 13 }{ 5 }$$
$\frac{143}{25}=5.72$
$$\frac{11\times 13}{5\times 5}$$
$$\frac{143}{25}$$
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$\frac{11 \cdot 13}{5 ^ {2}} = 5\frac{18}{25} = 5.72$
