\(=\left(-67\right).\left(-33\right)-67.77+\left(-67\right).33-77.33\)
\(=\left[\left(-67\right).\left(-33\right)+\left(-67\right).33\right]-66.77-77.33\)
\(=-77\left(66+33\right)=-77.99=-7623\)
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