$$8\times9-[32-\{24\div(8-\overline{4-2})\}]$$
$52$
$$72-\left(32-\frac{24}{8-4-2}\right)$$
$$72-\left(32-\frac{24}{4-2}\right)$$
$$72-\left(32-\frac{24}{2}\right)$$
$$72-\left(32-12\right)$$
$$72-20$$
$$52$$
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$2^{2}\times 13$
