You wish to retire in 12 years, at which time you want to have accumulated enough money to receive an annual annuity of $22,000 for 17 years after retirement. During the period before retirement you can earn 8 percent annually, while after retirement you can earn 10 percent on your money

What annual contributions to the retirement fund will allow you to receive the $22,000 annuity?

Please show work and recommendations from site calculators.