$$\frac{728}{640}\times\frac{548}{234}\times\frac{632}{624}$$
$\frac{75761}{28080}\approx 2.698041311$
$$\frac{91}{80}\times \frac{548}{234}\times \frac{632}{624}$$
$$\frac{91}{80}\times \frac{274}{117}\times \frac{632}{624}$$
$$\frac{91\times 274}{80\times 117}\times \frac{632}{624}$$
$$\frac{24934}{9360}\times \frac{632}{624}$$
$$\frac{959}{360}\times \frac{632}{624}$$
$$\frac{959}{360}\times \frac{79}{78}$$
$$\frac{959\times 79}{360\times 78}$$
$$\frac{75761}{28080}$$
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$\frac{7 \cdot 79 \cdot 137}{2 ^ {4} \cdot 3 ^ {3} \cdot 5 \cdot 13} = 2\frac{19601}{28080} = 2.6980413105413104$