Step 1: Divide the number into separate digits:
80053 => 8 0 0 5 3
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
8 to 0 = 8
0 to 0 = 0
0 to 5 = 5
5 to 3 = 2
3 to 8 = 5
Step 3: Combine the filters to a string:
8 0 5 2 5 = 80525