8又8分之7+88又8分之7+888又8分之7+8分之1×3=9-1/8+89-1/8+889-1/8+3/8=9+89+889=98710÷8+3.96×12.5%＋0.204×1又4分之1=0.125×10+3.96×0.125+2.04×0.125=0.125×(10+3.96+2.04)=0.125×16=2