To purchase USDT for rubles, use USDT exchangers
USDT/BNB Calculator Tether to Binance Coin
Price of 1 Tether today (11 February)
BNB 0.0017
0.0084%
USDT 
BTC
USD
RUB
EUR
GBP
ETH
LTC
BCH
BNB
BUSD
SOL