$$(6^{-1}\times3^{-2})\div7^{-2}$$
$\frac{49}{54}\approx 0.907407407$
$$\frac{\frac{1}{6}\times 3^{-2}}{7^{-2}}$$
$$\frac{\frac{1}{6}\times \frac{1}{9}}{7^{-2}}$$
$$\frac{\frac{1}{54}}{7^{-2}}$$
$$\frac{\frac{1}{54}}{\frac{1}{49}}$$
$$\frac{1}{54}\times 49$$
$$\frac{49}{54}$$
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$\frac{7 ^ {2}}{2 \cdot 3 ^ {3}} = 0.9074074074074074$