14.72÷3.2= ÷32 6.8×1.05= × 3.02÷0.5=3.02× W× =W÷0.25.
× =0.2: =1÷ === %= 小数.
( : )=0.4==4÷ = %
: =× = %=0.4.
0.25==18: = %.
= : =0.6== %.