Cannot figure these two out. been stuck on them for an hour.

Find the periodic payment R required to accumulate a sum of S dollars over t years with interest earned at the rate of r%/year compounded m times a year. (Round your answer to the nearest cent.) S = 130,000, r = 3.5, t = 25, m = 2 = $ 430.85 X Find the periodic payment R required to amortize a loan of P dollars over t years with interest charged at the rate of r%/year compounded m times a year. (Round your answer to the nearest cent.) P = 110,000, r = 3.5, t = 27, m = 2 = = $ 651.97 x