Assistance to understand

Jessie, an engineer joins a company at age 22 and decides to invest in the companies' retirement system. Jessie want to have $2,000,000 in the account by the time she is 52 years old. If Jessie starts to invest at the end of the first year at her job and she provides uniform payments yearly how much does she have to invest at the end of every year to make her goal? The fund returns 7% a year