Step 1: Divide the number into separate digits:
92238 => 9 2 2 3 8
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
9 to 2 = 7
2 to 2 = 0
2 to 3 = 1
3 to 8 = 5
8 to 9 = 1
Step 3: Combine the filters to a string:
7 0 1 5 1 = 70151