On January 1, 2020, Headland Corporation issued $580,000 of 9% bonds, due in 10 years. The bonds were issued for $543,860, and pay interest each July 1 and January 1. Headland uses the effective-interest method. Prepare the companys journal entries for (a) the January 1 issuance, (b) the July 1 interest payment, and (c) the December 31 adjusting entry. Assume an effective-interest rate of 10%.