Derek wants to withdraw $12,494.00 from his account 7.00 years from today and $13,981.00 from his account 11.00 years from today. He currently has $2,063.00 in the account. How much must he deposit each year for the next 11.0 years? Assume a 6.48% interest rate. His account must equal zero by year 11.0 but may be negative prior to that.