So finding the least common multiple of 2, 3, 4, 5, 6, 7, 8, 9, 10 and subtracting 1 is the step of this pile of peaches.
The least common multiple of 2, 3, 4, 5, 6, 7, 8, 9, 10 is:
2*3*5*7*2*2*3=2520
So the number of peaches in this pile is: 2520- 1=25 19.