Cost of living in Chittagong (Bangladesh) is about the same as in Arkhangelsk (Russia)
WARNING! This comparison is based on only a few data points. At this point it is only a guess. It is based on 181 prices entered by 17 different people.
For example, you would need at least руб 87,374 (Taka 115,662) in Chittagong to maintain the same standard of living that you can have with руб 85,000 in Arkhangelsk.