$$\frac{4}{9}\frac{}{63}$$
$\frac{4}{567}\approx 0.007054674$
$$\frac{4\times 1}{9\times 63}$$
$$\frac{4}{567}$$
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$\frac{2 ^ {2}}{3 ^ {4} \cdot 7} = 0.007054673721340388$
