0.32÷(0.5÷12.5)×25=0.32×12.5×25÷0.5=0.8×0.4×12.5×25÷0.5=(0.8×12.5)×(0.4×25)÷0.5=10×10÷0.5=100÷0.5=200
=0.32÷0.5×12.5×25 =0.8×0.4×12.5×25÷0.5 =0.8×12.5×(0.4×25)÷05 =100÷0.5 =200
=0.32÷0.5×12.5×25=(0.4×0.8×12.5×25)