please explain

8. On January 1,2018 , Piper Co. issued ten-year bonds with a face value of $8,000,000 and a stated interest rate of 12%, payable semiannually on June 30 and December 31 . The bonds were sold to yield 14%. Calculate the issue price of the bond. 9. Pronghorn Corporation purchases a patent from Crane Company on January 1, 2017, for $200,000. The patent has a remaining legal life of 15 years. Pronghorn feels the patent will be useful for 10 years. Prepare Pronghorn's journal entries to record the purchase of the patent and 2017 amortization