$$\frac{ 20 \times 49 }{ 20 \times 68,57 }$$
$\frac{4900}{6857}\approx 0,714598221$
$$\frac{49}{68,57}$$
$$\frac{4900}{6857}$$
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$\frac{2 ^ {2} \cdot 5 ^ {2} \cdot 7 ^ {2}}{6857} = 0.7145982207962666$
