Step 1: Divide the number into separate digits:
02833 => 0 2 8 3 3
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
0 to 2 = 2
2 to 8 = 6
8 to 3 = 5
3 to 3 = 0
3 to 0 = 3
Step 3: Combine the filters to a string:
2 6 5 0 3 = 26503