Darin is saving up money for a down payment on a car. He currently has $5450, but knows he can get a loan at a lower interest rate if he can put down $6242. If he invests the $5450 in an account that earns 4.7 % annually, compounded continuously, how long will it take Darin to accumulate the $6242? Round your answer to two decimal places, if necessary. Keypad