$$[(\frac{1}{3})^{-4}-(\frac{1}{2})^{4}]^{-1}$$
$\frac{16}{1295}\approx 0.012355212$
$$\left(81-\left(\frac{1}{2}\right)^{4}\right)^{-1}$$
$$\left(81-\frac{1}{16}\right)^{-1}$$
$$\left(\frac{1295}{16}\right)^{-1}$$
$$\frac{16}{1295}$$
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$\frac{2 ^ {4}}{5 \cdot 7 \cdot 37} = 0.012355212355212355$
