1.1+1.12+1.123+1.1234+1.12345+1.123456+1.1234567+1.12345678+1.123456789=
问题描述：
1.1+1.12+1.123+1.1234+1.12345+1.123456+1.1234567+1.12345678+1.123456789=
答
10.08367627讲一下吧一点点算的-_-||