14×0.573+1.4×2.27=14×0.573+14×0.227=14×（0.573+0.227）=14×0.8=11.2
简便计算14×0.573+1.4×2.27=14×0.573+14×0.227=14×(0.573+0.227)=14×0.8=11.2
7.06-(3.7.×0.4+3.06)=7.06-3.06-3.7x0.4=4-1.48=2.52
