Bill starts a retirement fund at age 21 and plans on depositing equal annual amounts on each birthday, starting at age 21, and ending at age 60. He wants to have $2 million at age 60. John starts his fund on his 30^th birthday. He wants to deposit equal annual amounts on each birthday starting on his 30^th birthday and ending on his 60^th birthdayJohn wants to have $2 million at age 60. If the investment funds earn 10% per year, calculate the amounts the Bill and John respectively will have to save each year (rounded to the nearest dollar) to meet their goals. Comment on the difference.