If you add another step, you can complete each step by taking 2, 3, 4, 5 and 6, so the number of steps+1 is an integer multiple of the least common multiple of 2, 3, 4, 5 and 6, which is an integer multiple of 60.

The number of steps is 60k- 1, because 60k- 1 is an integer multiple of 7, so k = 2,9,16,23.

So the number of steps is 1 19539959.

The minimum number of steps is 1 19.