What does 2 Chronicles 27:5 mean?

He fought against the king of the Ammonites and won. That year, the Ammonites paid him three and a half tons of silver, sixty thousand bushels of wheat, and sixty thousand of barley. They kept paying him the same amount for two more years. 2 Chronicles 27:5 - Modern Text Bible

(Jotham’s military success brought wealth and tribute from neighboring nations.)