How to convert this , I m not getting this? I tried converting that into decimal 10*16^-1 and so on and got this (0.6708068848)10 Now it become really a complex task is there any short method to do so?
I think you're over-complicating it; I find it easiest to first convert it to binary (base-2) and then to octal (base-8).
Binary (bits partitioned into 3's because octal numbers have 3 bits):
0.101_010_111_011_101_000
Octal:
0.527350