Step 1: Divide the number into separate digits:
14798 => 1 4 7 9 8
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
1 to 4 = 3
4 to 7 = 3
7 to 9 = 2
9 to 8 = 1
8 to 1 = 7
Step 3: Combine the filters to a string:
3 3 2 1 7 = 33217