76.5-12.5*3.2 126.75/0.5-13.6 90.4/2.26*7.07 13.6*3+4.06/0.2 27.3/0.84-0.8*6.5 0.6*（5.3-1.7)/0.9

76.5-12.5*3.2 =76.5-40=26.5126.75/0.5-13.6 =253.5-13.6=239.990.4/2.26*7.07 =40*7.07=282.813.6*3+4.06/0.2 =13.6+20.3=33.927.3/0.84-0.8*6.5 =32.5+5.2=37.70.6*（5.3-1.7)/0.9=0.6*4=2.4