$$\frac{ { 6 }^{ 2 } }{ { 1 }^{ 2 } { 6 }^{ 2 } { 9 }^{ 2 } }$$
$\frac{1}{81}\approx 0.012345679$
$$\frac{1}{1^{2}\times 9^{2}}$$
$$\frac{1}{1\times 9^{2}}$$
$$\frac{1}{1\times 81}$$
$$\frac{1}{81}$$
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$\frac{1}{3 ^ {4}} = 0.012345679012345678$
