$$4616-3164- { 31 }^{ 2 } { 1 }^{ 2 } 1$$
$491$
$$4616-3164-31^{2}\times 1^{3}$$
$$1452-31^{2}\times 1^{3}$$
$$1452-961\times 1^{3}$$
$$1452-961\times 1$$
$$1452-961$$
$$491$$
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