40,2-0,08×2,5-18,288÷9÷0,4+6,1

40,2-0,08*2,5-18,288/9/0,4+6,1=41,020,08*2,5=0,218,288/9=2,0322,032/0,4=5,0840,2-0,2-5,08+6,1=41,02