With no taxes or inflation (Spreadsheet 21.1), what would be your retirement annuity if you increase the

Question:

With no taxes or inflation (Spreadsheet 21.1), what would be your retirement if you increase the savings rate by 1%?
Annuity
An annuity is a series of equal payment made at equal intervals during a period of time. In other words annuity is a contract between insurer and insurance company in which insurer make a lump-sum payment or a series of payment and, in return,...