$$( \frac{ 4 }{ 5 } \times \frac{ 15 }{ 7 } \times \frac{ 14 }{ 16 } \times ( \frac{ 8 }{ 28 } ))$$
$\frac{3}{7}\approx 0.428571429$
$$\frac{4\times 15}{5\times 7}\times \frac{14}{16}\times \frac{8}{28}$$
$$\frac{60}{35}\times \frac{14}{16}\times \frac{8}{28}$$
$$\frac{12}{7}\times \frac{14}{16}\times \frac{8}{28}$$
$$\frac{12}{7}\times \frac{7}{8}\times \frac{8}{28}$$
$$\frac{12\times 7}{7\times 8}\times \frac{8}{28}$$
$$\frac{12}{8}\times \frac{8}{28}$$
$$\frac{3}{2}\times \frac{8}{28}$$
$$\frac{3}{2}\times \frac{2}{7}$$
$$\frac{3\times 2}{2\times 7}$$
$$\frac{3}{7}$$
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$\frac{3}{7} = 0.42857142857142855$
