$$(9 \times (-1) \times (-1))+(2 \times 2 \times 5)+(12 \times 1 \times 1)$$
$41$
$$-9\left(-1\right)+4\times 5+12\times 1$$
$$9+4\times 5+12\times 1$$
$$9+20+12\times 1$$
$$29+12\times 1$$
$$29+12$$
$$41$$
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