A careful investor saved $1,200 each year for 20 years. One year after the savings period ended, the investor withdrew $7,500 each year for a period of 5 years. In the sixth and seventh year, the investor withdrew $4,500 each of those years. In the eight year, the investor decided to withdraw all the remaining funds. If the interest rate was 8% per year throughout, how much did the investor withdraw at the end of year 8?