((23,79:7,8-6,8:17)*3,04-2,04)*0,85
((23,79:7,8-6,8:17)*3,04-2,04)*0,85= ((2,65)*1)*0,85=2,65*0,85=2,2525
23,79:7=3.3985 6,8:17=0.4 3.3985-0.4=2.9985 2.9985×3.04=9.11544 9.11544-2.04=7.07544 7.07544×0.85=6.014124