$${ 76 }^{ 2 } { 84 }^{ 2 } { 5 }^{ 2 } { 140 }^{ 2 }$$
$19970173440000$
$$5776\times 84^{2}\times 5^{2}\times 140^{2}$$
$$5776\times 7056\times 5^{2}\times 140^{2}$$
$$40755456\times 5^{2}\times 140^{2}$$
$$40755456\times 25\times 140^{2}$$
$$1018886400\times 140^{2}$$
$$1018886400\times 19600$$
$$19970173440000$$
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$2^{12}\times 3^{2}\times 5^{4}\times 7^{4}\times 19^{2}$
