help pls thanksss

4. A self-employed individual, Jimmy Carpenter. is opening a retirement account at a bank. His goal is to accumulate P2.000.000 in the account by the time he retires from work in 20 years. A local bank is willing to open a retirement account that pays 8% interest. compounded quarterly. throughout the 20 years. He wishes to start with a deposit at the end of the end of lst semiannual and increase the deposit by PS,000 per semiannual. what should be the size of his first deposit