needs explanation for number 3

Coffee International is planning to expand their current operations and issues $500,000 par value 8% bonds for $478,000 on January 1, 2019. The bonds mature in 10 years with interest payments paid out semiannually. 1. Are these bonds being issued at par, at a premium, or at a discount? Issued at discount 2. Prepare the journal entry for the issuance of the bond. Dr Cash 478,000 Dr Discount on bonds payable 22,000 Cr Bonds Payable 500,000 3. Prepare the journal entry for the first semiannual interest payment. Interest expense 4. Prepare the journal entry to account for the principal repayment at the maturity date assuming the final interest payment has been made