Monica finished her program at New Brunswick Community College on June 3 with Canada Student Loans totalling $6800. She decided to capitalize the interest that accrued (at prime plus 2.5%) during the grace period. In addition to regular end-of-month payments of $200, she made an extra $500 lump payment on March 25 that was applied entirely to principal. The prime rate dropped from 5% to 4.75% effective September 22, and declined another 0.5% effective March 2. Calculate the balance owed on the floating-rate option after the regular March 31 payment. The relevant February had 28 days.