Zeke's Zipline Adventures sold a bus used in the business for $16,000. Zeke's original cost of the bus was $15,000 and the adjusted basis at the time of sale was $13,600. Zeke received $4,000 at the time of sale. He will receive $8,000 next year and the remaining $4,000 in the following year.
How much gain will Zeke recognize in the current year?