$$(\frac{-2}{10}\times\frac{-11}{15})^{2}$$
$\frac{121}{5625}\approx 0.021511111$
$$\left(-\frac{1}{5}\times \frac{-11}{15}\right)^{2}$$
$$\left(-\frac{1}{5}\left(-\frac{11}{15}\right)\right)^{2}$$
$$\left(\frac{11}{75}\right)^{2}$$
$$\frac{121}{5625}$$
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$\frac{11 ^ {2}}{3 ^ {2} \cdot 5 ^ {4}} = 0.021511111111111113$