数学简便计算:1/27+505/2727+131313/272727+35353535/27272727=

1/27+505/2727+131313/272727+35353535/27272727 =1/27+5*101/(101*27)+(13*10101)/(27*10101)+35*1010101/(27*1010101) =1/27+5/27+13/27+35/27 =(1+5+13+35)/27 =54/27=2