$$\frac{ 7 }{ 9 } \times \frac{ 6 }{ 5 } / \frac{ 9 }{ 7 }$$
$\frac{98}{135}\approx 0.725925926$
$$\frac{\frac{7\times 6}{9\times 5}}{\frac{9}{7}}$$
$$\frac{\frac{42}{45}}{\frac{9}{7}}$$
$$\frac{\frac{14}{15}}{\frac{9}{7}}$$
$$\frac{14}{15}\times \frac{7}{9}$$
$$\frac{14\times 7}{15\times 9}$$
$$\frac{98}{135}$$
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$\frac{2 \cdot 7 ^ {2}}{3 ^ {3} \cdot 5} = 0.725925925925926$