0.32*0.25*12.5=0.4*0.8*0.25*12.5=(0.4*0.25)*(0.8*12.5)=0.1*10=1
=0.4×0.8×0.25×12.5=0.1×10=1
=(4x0.25)x(0.8x12.5)=1x1=1