Need help with these two simple interest questions

Mac's credit card statement included $2416.00 in cash advances and $177.04 in interest charges. The interest rate on the statement was 115% p.a. For how many days was Mac charged interest? The number of days required is. (Round up the final answer to the nearest day as needed. Round all intermediate values to six decimal places as needed.)What principal will have a future value of $2093.00 at 6.2% in nine months? The principal is $ 2000 (Round the final answer to the nearest cent as needed. Round all intermediate values to six decimal places as needed.)