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Pls answer both and show all work, only respond if you are confident in your answer, i've wasted a lot of questions this month on incorrect answers

Find the present value at time 0 of regular payments of $100 at times 23 years, 24 years, and so on, with the last payment at time 41 years. Use an annual interest rate of 7.5%. Round your answer to 2 decimal places. An annuity is structured so that you will receive yearly payments with the first payment to be received 3 years from today. The annuity consists of 5 payments of $800 followed by 8 payments of $400 and then payments of $700 continuing forever. Find the amount that you would have to pay today to receive this annuity if it has a constant force of interest of 9%. Round your answer to 2 decimal places