We have figured out answer BUT we cant figure out the steps to get it

During gym class, the teacher gave students a number as they stood in line she counted 1, 2 and 3 then 1, 2 and 3 ......
What number did 22 second person get?

3 answers

What answer did you get?
number 1 but cant figure out the formula
3 * 7 = 21

So one more must be 1.