Simple calculation of 26.39 * 36 + 26.39 * 83-263.9 * 1.9
Original formula = 26.39 * 36 + 26.39 * 83-26.39 * 10 * 1.9
=26.39*36+26.39*83-26.39*190
Then put forward 26.39
=26.39*(36+83+190)
=26.39*309
=8154.51
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