Please explain the steps.

4. Lisa James expects to retire in 15 years and she expects to live ten years after she retires. Lisa would ke to have $20,000 available at the beginning of each year of her retirement. How much would lisa need to deposit at the end of each of the next 10 years in order for her to reach her retirement objective? The deposit will be made into an account that earns 10% interest. $5,266.63