（1/8+1/24+1/48+1/80+1/120+1/168+1/224+1/228）*128

（1/8+1/24+1/48+1/80+1/120+1/168+1/224+1/288）*128 =（1/2+1/6+1/12+1/20+1/30+1/42+14/56+1/72）*32=（1-1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6+1/6-1/7+1/7-1/8+1/8-1/9）*32=（1-1/9）*32=8/9*32=256/9