=7.8/(0.25*8)=7.8/2=3.9
原式=7.8÷(0.25x8) =7.8÷2 =3.9
7.8÷0.25÷8=7.8÷(0.25×8)=7.8÷2=3.9
7.8÷0.25÷8=7.8÷(0.25×8)=7.8÷2=3.9