Question 1: total interest in semiannual period 1 Question 2: total interest in semiannual period 2 Question 3: total interest in semiannual period 3 Question 4: total interest in semiannual period 4 Question 5: total interest in semiannual period 5 Question 6: total interest in semiannual period 6 Question 7: total interest in semiannual period 7 Question 8: total interest in semiannual period 8 Question 9: total interest for the sum of the 8 periods Question 10: total debt service in semiannual period 1 Question 11: total debt service in semiannual period 2 Question 12: total debt service in semiannual period 3 Question 13: total debt service in semiannual period 4 Question 14: total debt service in semiannual period 5 Question 15: total debt service in semiannual period 6 Question 16: total debt service in semiannual period 7 Question 17: total debt service in semiannual period 8 Question 18: total debt service for the sum of the 8 perio