$$\frac{845}{920}\times\frac{648}{720}$$
$\frac{1521}{1840}\approx 0.826630435$
$$\frac{169}{184}\times \frac{648}{720}$$
$$\frac{169}{184}\times \frac{9}{10}$$
$$\frac{169\times 9}{184\times 10}$$
$$\frac{1521}{1840}$$
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$\frac{3 ^ {2} \cdot 13 ^ {2}}{2 ^ {4} \cdot 5 \cdot 23} = 0.8266304347826087$