$${ 9 }^{ 2 } / { 5 }^{ 2 } { 6 }^{ 2 } { 7 }^{ 2 }$$
$\frac{142884}{25}=5715.36$
$$\frac{81}{5^{2}}\times 6^{2}\times 7^{2}$$
$$\frac{81}{25}\times 6^{2}\times 7^{2}$$
$$\frac{81}{25}\times 36\times 7^{2}$$
$$\frac{81\times 36}{25}\times 7^{2}$$
$$\frac{2916}{25}\times 7^{2}$$
$$\frac{2916}{25}\times 49$$
$$\frac{2916\times 49}{25}$$
$$\frac{142884}{25}$$
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$\frac{2 ^ {2} \cdot 3 ^ {6} \cdot 7 ^ {2}}{5 ^ {2}} = 5715\frac{9}{25} = 5715.36$