计算3.14×67+8.2×31.4﹣90×0.31412.65÷12.5÷0.8 (32×0.63×0.95)÷(1.6×21×1.9)
140÷2= 112÷2=
155÷5= 165÷5=
120÷3= 244÷2=
110÷2= 112÷2=
106÷2= 108÷2=