(6 3/5-3,7)×3+(4 5/8+1/4):9,75

(6 3/5 - 3,7) * 3 + (4 5/8 + 1/4) / 9,75 = (6,6 - 3,7) * 3 + (4,625 + 0,25) / 9,75 = 2,5 * 3 + 4,875/9,75 = 7,5 + 0,5 =8,0