21. Baron Münchhausen told a story. "A whole crowd gathered. We reached a crossroads. Then half of our group turned left, a third - right, and a fifth - straight ahead." "But excuse me," the duke noticed, - the sum of a half, a third, and a fifth is not equal to one, so you are lying!" The baron objected: "I am not lying, I am rounding. For example, 17 people are walking. I say that a third turned. According to you, should one of the people split? No, with rounding, it turns out that six turned. After all, the closest whole number to the fraction $17 / 3$ is 6. And if I say that half of 17 people turned - that means 8 or 9 people." It is known that Baron Münchhausen never lies. What is the largest number of people that could have been in the crowd?

## 7th grade