Step 1: Divide the number into separate digits:
96199 => 9 6 1 9 9
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
9 to 6 = 3
6 to 1 = 5
1 to 9 = 8
9 to 9 = 0
9 to 9 = 0
Step 3: Combine the filters to a string:
3 5 8 0 0 = 35800