6×0.375＋3/8×3+37.5%=6x0.375+0.375x3+0.375=（6+3+1）x0.375=10x0.375=3.75
6×0.375＋3/8×3+37.5%=6×0.375+0.375×3+0.375=0.375×（6+3+1）=0.375×10=3.75
如图
同以上，都给换算成0.375，就容易了
