$$\frac{ 11 }{ 2 } +8$$
$\frac{27}{2}=13.5$
$$\frac{11}{2}+\frac{16}{2}$$
$$\frac{11+16}{2}$$
$$\frac{27}{2}$$
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$\frac{3 ^ {3}}{2} = 13\frac{1}{2} = 13.5$