$$A=(-3) \times (-7) \times (-0.25) \times (+12) \times (+1.5)$$
$A=-94.5$
$$A=21\left(-0.25\right)\times 12\times 1.5$$
$$A=-5.25\times 12\times 1.5$$
$$A=-63\times 1.5$$
$$A=-94.5$$
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$A≔-94.5$
