please can uiu explain this example and who did get the answer

Bonds issued at a discount The issuing price? Price PV of interest + PV of face amount PV of interest :Interest payment = $700,000 X 12% X (6/12)=$42,000 N=2 3-6 semiannual periods; -14% X (6/12)=7% PV of interest-$42.000 X 4.76654 = $200.195 . PV of face amount: Face amount-$700,000 n=2X3-6 semiannual periods i 14% X (6/12)=7% PV=$700,000X0.66634=$466,438 Price $200,195+$466,438 =$666,633