It is necessary to simplify the calculation process 375×12÷375×12 159×64＋27×159＋（200－41）×9

375×12÷375×12
=375÷375×12×12
=1×12×12
=144
159×64＋27×159＋（200－41）×9
=159×64+159×27+159×9
=159×(64+27+9)
=159×100
=15900

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