9999 8/9 +999 8/9 +99 8/9 +9 8/9+3
=10000-1/9+1000-1/9+100-1/9+10-1/9+3
=11110-1/9x4+3
=11113-4/9
=11112又5/9
手机提问的朋友在客户端右上角评价点【满意】即可.