The Johnsons want to be able to live off their retirement account for the next 20 years. They estimate they will need $4300 every other month to cover their expenses. They can open such an account that is compounded every other month, at 5,49%. How much should they deposit today, so they are able to live comfortably for the next 20 years, assuming no other income.

Chegg experts please help on paper, also this is finance math.