$$\frac { 1 } { 7 } \frac { 2 } { 9 } \frac { 6 } { 5 } \frac { 3 } { 5 } \frac { 3 } { 10 }$$
$\frac{6}{875}\approx 0.006857143$
$$\frac{1\times 2}{7\times 9}\times \frac{6}{5}\times \frac{3}{5}\times \frac{3}{10}$$
$$\frac{2}{63}\times \frac{6}{5}\times \frac{3}{5}\times \frac{3}{10}$$
$$\frac{2\times 6}{63\times 5}\times \frac{3}{5}\times \frac{3}{10}$$
$$\frac{12}{315}\times \frac{3}{5}\times \frac{3}{10}$$
$$\frac{4}{105}\times \frac{3}{5}\times \frac{3}{10}$$
$$\frac{4\times 3}{105\times 5}\times \frac{3}{10}$$
$$\frac{12}{525}\times \frac{3}{10}$$
$$\frac{4}{175}\times \frac{3}{10}$$
$$\frac{4\times 3}{175\times 10}$$
$$\frac{12}{1750}$$
$$\frac{6}{875}$$
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$\frac{2 \cdot 3}{5 ^ {3} \cdot 7} = 0.006857142857142857$