Andre bought a 10% callable bond with a face value of $10,000 due on June 30, 2030. This bond is not redeemable before June 30, 2025. After that date, it is redeemable according to the following payment schedule upon 30 days notice, up to the 12 months ending June 30th of each year. 2026 at 105.21, 2027 at 103.85, and 2028 at 102. Calculate the amount of the principal payment if the bond is called on May 30, 2028 (ignore accrued interest)