$$9\frac{1}{10}+3\frac{1}{5}+4\frac{1}{15}$$
$\frac{491}{30}\approx 16.366666667$
$$\frac{90+1}{10}+\frac{3\times 5+1}{5}+\frac{4\times 15+1}{15}$$
$$\frac{91}{10}+\frac{3\times 5+1}{5}+\frac{4\times 15+1}{15}$$
$$\frac{91}{10}+\frac{15+1}{5}+\frac{4\times 15+1}{15}$$
$$\frac{91}{10}+\frac{16}{5}+\frac{4\times 15+1}{15}$$
$$\frac{91}{10}+\frac{32}{10}+\frac{4\times 15+1}{15}$$
$$\frac{91+32}{10}+\frac{4\times 15+1}{15}$$
$$\frac{123}{10}+\frac{4\times 15+1}{15}$$
$$\frac{123}{10}+\frac{60+1}{15}$$
$$\frac{123}{10}+\frac{61}{15}$$
$$\frac{369}{30}+\frac{122}{30}$$
$$\frac{369+122}{30}$$
$$\frac{491}{30}$$
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$\frac{491}{2 \cdot 3 \cdot 5} = 16\frac{11}{30} = 16.366666666666667$
