$$\frac{1}{4}\cdot(\frac{-2}{3})+\frac{1}{4}\cdot\frac{3}{3}+\frac{1}{4}\cdot\frac{1}{3}$$
$\frac{1}{6}\approx 0.166666667$
$$\frac{1}{4}\times \frac{-2}{3}+\frac{1}{4}\times 1+\frac{1}{4}\times \frac{1}{3}$$
$$\frac{1}{4}\left(-\frac{2}{3}\right)+\frac{1}{4}\times 1+\frac{1}{4}\times \frac{1}{3}$$
$$\frac{1\left(-2\right)}{4\times 3}+\frac{1}{4}\times 1+\frac{1}{4}\times \frac{1}{3}$$
$$\frac{-2}{12}+\frac{1}{4}\times 1+\frac{1}{4}\times \frac{1}{3}$$
$$-\frac{1}{6}+\frac{1}{4}\times 1+\frac{1}{4}\times \frac{1}{3}$$
$$-\frac{1}{6}+\frac{1}{4}+\frac{1}{4}\times \frac{1}{3}$$
$$-\frac{2}{12}+\frac{3}{12}+\frac{1}{4}\times \frac{1}{3}$$
$$\frac{-2+3}{12}+\frac{1}{4}\times \frac{1}{3}$$
$$\frac{1}{12}+\frac{1}{4}\times \frac{1}{3}$$
$$\frac{1}{12}+\frac{1\times 1}{4\times 3}$$
$$\frac{1}{12}+\frac{1}{12}$$
$$\frac{1+1}{12}$$
$$\frac{2}{12}$$
$$\frac{1}{6}$$
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$\frac{1}{2 \cdot 3} = 0.16666666666666666$