=（6 3/5-8 1/2+1/3）/3.5*0.625=（6 18/30-8 15/30+10/30）/3.5*0.625=2.4333/3.5*0.625=0.4345
[6又五分之三--（8.5--三分之一）÷3.5]×0.625=（6 3/5-8 1/2+1/3）/3.5*0.625=（6 18/30-8 15/30+10/30）/3.5*0.625=2.4333/3.5*0.625=0.4345
