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Marisa will retire in ten years and is saving $300 every month to purchase a thirty-year monthly annuity to provide income in retirement. Her savings account pays a nominal rate of 8% annual interest converted monthly while the annuity is priced based on a nominal annual interest rate of 15% compounded monthly. What will Marisa's monthly payment be? David donates to North Central College the remaining payments of his thirty-year annuity with monthly payments to North Central to begin upon his death. Based on current statistics, David is likely to live an additional ten years. Thus, North Central can expect to start receiving payments starting with payment 121. David will report this donation on his tax return as a charitable donation. If the annuity pays $500 per month, what is the value of this donation