Step 1: Divide the number into separate digits:
41088 => 4 1 0 8 8
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
4 to 1 = 3
1 to 0 = 1
0 to 8 = 8
8 to 8 = 0
8 to 4 = 4
Step 3: Combine the filters to a string:
3 1 8 0 4 = 31804