0.36÷【(6.1-4.6)×0.8】=0.36÷【1.5×0.8】=0.36÷1.2=36÷120=3/10按顺序较简便
直接计算最简便0.36÷[(6.1-4.6)×0.8]=0.36÷(1.5×0.8)=0.36÷1.2=0.3