please help with both ive gotten them wrong 3 times now

Consider a 20-year mortgage for $391,494 at an annual interest rate of 4.9%. After 6 years, the mortgage is refinanced to an annual interest rate of 2.4%. What are the monthly payments after refinancing? Round your answer to the nearest dollar. Question 8 1 pts Consider a 30-year mortgage for $332,573 at an annual interest rate of 5.7%. After 12 years, the mortgage is refinanced to an annual interest rate of 3%. How much interest is paid on this mortgage? Round your answer to the nearest dollar