$$56+34+29+55+43+76+70+74$$
$437$
$$90+29+55+43+76+70+74$$
$$119+55+43+76+70+74$$
$$174+43+76+70+74$$
$$217+76+70+74$$
$$293+70+74$$
$$363+74$$
$$437$$
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$19\times 23$