On the first day of the fiscal year, Jill Company issues $3,639,000, 11%, 10-year bonds for cash of $4,673,393 when the market rate of interest was 7%. The bonds pay interest semi-annually on June 30 and December 31. Determine (1) the premium on bonds payable at the date of issuance, (2) the semi-annual cash interest payment, (3) the semi-annual premium amortization using the straight line method, and (4) the semi-annual interest expense.