Step 1: Divide the number into separate digits:
06922 => 0 6 9 2 2
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
0 to 6 = 6
6 to 9 = 3
9 to 2 = 7
2 to 2 = 0
2 to 0 = 2
Step 3: Combine the filters to a string:
6 3 7 0 2 = 63702