$$=\frac{10}{3}\times\frac{4}{5}\times\frac{15}{14}$$
$\frac{20}{7}\approx 2.857142857$
$$\frac{10\times 4}{3\times 5}\times \frac{15}{14}$$
$$\frac{40}{15}\times \frac{15}{14}$$
$$\frac{8}{3}\times \frac{15}{14}$$
$$\frac{8\times 15}{3\times 14}$$
$$\frac{120}{42}$$
$$\frac{20}{7}$$
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$\frac{2 ^ {2} \cdot 5}{7} = 2\frac{6}{7} = 2.857142857142857$