Undying Life Insurance Company offers an investment policy that will pay you and your heirs $50,000 per year forever. Suppose the company told you the policy costs $660,594. At what interest rate would this be a fair deal? (Do not include the percent sign (\%). Enter rounded answer as directed, but do not use the rounded numbers in intermediate calculations. Round your answer to 2 decimal placess (e.g., 32.16).)