I dont get the last part. I get 899 for the 6% and 1542 for the 12% after that i domt know what to do

we need to learn how to type this problem in a ti-30xs calculator A person who files bankruptcy ends up paying a 6% higher fixed interest rate on a 30-year home loan than a person who has not filed bankruptcy. The person who files bankruptcy pays a 12% interest rate on their home loan. If the loan amount is $150,000, how much more in total interest do they pay than the person who has not filed bankruptcy? a $258,375.30 b. $543.59 c. $149.536.52 d. $231,693.52 Please select the best answer from the choices provided