please help with these 2 questions. I need step by step please

You are set to receive an annual payment of $11,200 per year for the next 18 years. Assume the interest rate is 6.1 percent. How much more are the payments worth if they are received at the beginning of the year rather than the end of the year? Multiple Choice 571274 S6 883 30 $734219 Prey 4 of 5 !!! Next > Saved Help Save & Exh Assuming an interest rate of 7.3 percent, what is the value of the following cash flows four years from today? Year Cash Flow $3,475 4,420 6,360 8,545 Multiple Choice $26,956.52 $24,751.09 $25,374.87 $26,165.70 S2376104