Please clearly show workings! Also please do not use an excel sheet!

Dog Dylan will receive $24,000 a year for the next 25 years as payment for a song the band has just written. If a present 13 percent discount rate is applied: a) Calculate the present value. b) Should they be willing to sell out her future rights now for $174,000 ? c) Calculate the present value if the payments will be made at the beginning of each year. d) Would she be willing to sell her future rights now for $174,000, if the payments will be made at the beginning of each year