i need this question to be solved step by step please.

2) Harte Systems, Inc., a maker of electronic surveillance equipment, is considering selling to a well-known hardware chain the rights to market its home security system. The proposed deal calls for the hardware chain to make annual year-end payments of $15,000 in years 1 through 7 and $30,000 and $25,050 at the end of years 8 and 9 . A final payment to Harte of $10,000 would be due at the end of year 10. a) If Harte applies a required rate of return of 12% to them, what is the present value of this series of payments? b) A second company has offered Harte an immediate one-time payment of $100,000 for the rights to market the home security system. Which offer should Harte accept