0.4=()=()%=()(成数)=()(折扣)=():()急急急急急急急急!!!
0.4=(2/5)=(40)%=(4成)(成数)=(4折)(折扣)=(2):(5)
0.4=(2/5)=(40)%=(4成)(成数)=(4折)(折扣)=(2):(5)
0.4=(5分之2)=(40)%=(4成)(成数)=(4折)(折扣)=(2):(5)
0.4=(2/5)=(40)%=(4成)(成数)=(4)(折扣)=(2):(5)
0.4=(2/5)=(40)%=(4成)(成数)=(4折)(折扣)=(2):(5)急急急急急急急急!!!!!!!!!!!!