Grider Industries issued $10,000,000 of 8% debentures on May 1, 2014 and received cash totaling $8,872,628. The bonds pay interest semiannually on May 1 and November 1. The maturity date on these bonds is November 1, 2022. The firm uses the effective interest method of amortizing discounts and premiums. The bonds were sold to yield an effective interest rate of 10%. Calculate the total dollar amount 1. interest expense and 2. discount or premium amortization during the years ended December 31, 2014, 2015, 2015. Show computations