Please help, cannot figure out the last red box for Feb 28

Roger Supply Corp. has the following selected transactions for notes receivable. Nov. 1 1 Dec. 15 Lent $136,500 cash to A. Bouchard on a one-year, 9% note. Sold goods to Wright Inc., receiving a two-month, 6%, $30,200 note. Interest is due at maturity. The goods cost $18,816. Received a six-month, 6%, $33,120 note in exchange for an account from Aquilina Corporation. Interest is due at maturity. Collected the amount owing on the Wright note. Accrued interest on all notes receivable at year end. Assume that interest is calculated to the nearest half month. Analyzed each note and estimated that uncollectible notes at year end totalled $24,816. Feb. 1 28 28 Feb. 1 Cash 30502 Notes Receivable 30200 Interest Income 302 Feb. 28 Interest Receivable 1355 Interest Income 4095 (To accrue interest)