(2,781/2,06+7,825/3,13+3,885/1,85+4,578/3,27)*0,4*0,25
(2,781 / 2,06 + 7,825 / 3,13 + 3,885 / 1,85 + 4,578 / 3,27) × 0,4 × 0,25 = 0,735