$$18 - 3 \cdot ( 12 : ( - 1 ) \cdot 4 - 101 + 9 )$$
$438$
$$18-3\left(-12\times 4-101+9\right)$$
$$18-3\left(-48-101+9\right)$$
$$18-3\left(-149+9\right)$$
$$18-3\left(-140\right)$$
$$18-\left(-420\right)$$
$$18+420$$
$$438$$
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$2\times 3\times 73$