Una Day is planning toretire in 13 years, at which time she hopes to have accumulated enough money to receive an annuity of $23,000 a year for 18 years of retirement. During her pre-retirement period she expects to earn 9 percent annually, while during retirement she expects to earn 11 percent annually on her money.

What annual contributions to this retirement fund are required for Una to achieve her objective and sleep well at night? (Use a Financial calculator to arrive at the answer. Do not round intermediate calculations. Round the final answer to the nearest whole dollar.)

Annual contribution