$$(-473+219-56)Y(231-612+71)$$
$96100Y$
$$\left(-254-56\right)Y\left(231-612+71\right)$$
$$-310Y\left(231-612+71\right)$$
$$-310Y\left(-381+71\right)$$
$$-310Y\left(-310\right)$$
$$96100Y$$
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