Leaf Co. purchased from Oak Co. a $20,000, 8%, five-year note that required five equal annual year-end payments of $5,009. The note was discounted to yield a 9% rate to Leaf. At the date of purchase, Leaf recorded the note at its present value of $19,485. Leaf does not elect the fair value option for reporting its financial liabilities. What should be the total interest revenue earned by Leaf over the life of this note