$$( - 3 ) ^ { 5 } \div ( - 3 ) ^ { 7 }$$
$\frac{1}{9}\approx 0.111111111$
$$\frac{1}{\left(-3\right)^{2}}$$
$$\frac{1}{9}$$
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$\frac{1}{3 ^ {2}} = 0.1111111111111111$
