Please explain how to solve and how to imput equation on financial calculator:

5) A. You are now 30 years old and considering retirement. You estimate that you can live comfortably with $50,000 per year. You expect 2% inflation on your living expenses. If your bank pays 5% on your deposit, how much do you have to deposit today to retire after one year if you want a perpetual flow of $50,000 adjusted for the inflation