6/5×(6+60%)你前面的分数把5/6写成了6/5吧。应该等于5/6×6+5/6×0.6等于5+0.5等于5.5。
6/5*(6+60%)=6/5*(6+3/5)=6/5*(30/5+3/5)=6/5*33/5=198/25