I should have perhaps mentioned in the original post:
1$ = 152,3₽ (buying 1 US dollar)
1$ = 85,7₽ (selling 1 US dollar).
Just because you pay 152₽ to buy 1$ doesn't mean you can sell it at the same price. At least banks won't buy it.
According to banki.ru the best price for selling US dollar now is 94,00₽.
Hope that clarifies it.