Calculation: 76 × (123 − 153) + 23 × (153 + 176) − 53 × (123 − 176)=______ ．

76 × (123 − 153) + 23 × (153 + 176) − 53 × (123 − 176) = 76 × 123-76 × 153 + 23 × 153 + 23 × 176-53 × 123 + 53 × 176 = 76 × 123-53 × 123-76 × 153 + 23 × 153 + 23 × 176 + 53 × 176 ∧ 1-1 + 1 = 1

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