You just graduated this year and you plan to work for the next 12 years to save some money and start your own business afterwards. In the first 6 years, you expect to save $7,500 a year. In the subsequent 6 years, you expect to get a promotion and make more money, so you can save $15,000 a year. The first deposit is being made a year from today. In addition, your grandfather just gave you $25,000 as graduation gift, which you deposit to your bank account immediately. If the account earns 9% interest per year, how much will you have when you start your business 12 years from now?

You must show all calculation steps, providing a final answer only will not get you full marks.