$$\frac{ { 1 }^{ 2 } { 6 }^{ 2 } { 9 }^{ 2 } }{ { 6 }^{ 2 } }$$
$81$
$$1^{2}\times 9^{2}$$
$$1\times 9^{2}$$
$$1\times 81$$
$$81$$
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$3^{4}$
