(0.32+24/5)÷8=0.04+3/5=0.04+0.6=0.64.
(0.32+24/5)÷8的简便计算：(0.32+24/5)÷8=(0.32+24/5)x1/8=0.32x1/8+24/5x1/8=0.04+3/5=0.04+0.6=0.64
