A person plans to retire after 25 years. He wishes to deposit a sum of money every three months into an account where an annual interest of 8.2% is operated every three months. He plans to withdraw 15'000 TL from the account every three months for ten years after retirement (There will be no money left in the account after the last installment is withdrawn.) If the interest rate will not change during the period, determine what amount of money should be deposited into the account every three months before retiring.