Conversation so far:
What radical reforms did Boris Yeltsin have?
Boris Yeltsin's new regime aimed to completely dismantle socialism and fully implement capitalism, converting the world's largest command economy into a free-market one.
Are there any other interesting aspects about Boris Yeltsin?
On 2 January 1992, Boris Yeltsin, acting as his own Prime Minister, ordered the liberalisation of foreign trade, prices, and currency.
why did he order this liberalization?
Yeltsin followed a policy of macroeconomic stabilisation, a harsh austerity regime designed to control inflation.
why did Boris Yeltsin want control of inflation?
Inflation erodes the general purchasing power of money. Therefore, the interest rates must always be higher than inflation rates.

Question: how high were the interests rates raised?
Self-contained rewrite: how high were the interests rates raised under Boris Yeltsin?