Step 1: Divide the number into separate digits:
92620 => 9 2 6 2 0
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
9 to 2 = 7
2 to 6 = 4
6 to 2 = 4
2 to 0 = 2
0 to 9 = 9
Step 3: Combine the filters to a string:
7 4 4 2 9 = 74429