6.3. The hunter told a friend that he saw a wolf with a one-meter tail in the forest. That friend told another friend that a wolf with a two-meter tail had been seen in the forest. Passing on the news further, ordinary people doubled the length of the tail, while cowards tripled it. As a result, the 10th channel reported about a wolf with a tail 864 meters long. How many ordinary and how many cowardly people "grew" the wolf's tail? Provide all possible answers and prove that there are no others.