Step 1: Divide the number into separate digits:
72267 => 7 2 2 6 7
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
7 to 2 = 5
2 to 2 = 0
2 to 6 = 4
6 to 7 = 1
7 to 7 = 0
Step 3: Combine the filters to a string:
5 0 4 1 0 = 50410