$$-2\frac{1}{2}\times4\frac{2}{5}$$
$-11$
$$\left(-\frac{4+1}{2}\right)\times \frac{4\times 5+2}{5}$$
$$-\frac{5}{2}\times \frac{4\times 5+2}{5}$$
$$-\frac{5}{2}\times \frac{20+2}{5}$$
$$-\frac{5}{2}\times \frac{22}{5}$$
$$\frac{-5\times 22}{2\times 5}$$
$$\frac{-110}{10}$$
$$-11$$
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