step by step hand written please

1. Dr. A. Sanchez has $300,000 invested at 7.5%, and he now wants to retire. He wants to withdraw $35,000 at the end of each year, starting at the end of this year. He also wants to have $25,000 left to give his friend Dr. J. Mourinho when he ceases to withdraw funds from the account. For how many years can he make the $35,000 withdrawals and still have $25,000 left at the end? You must show you work and explain your approach in writing (1.5 points)