Step 1: Divide the number into separate digits:
64110 => 6 4 1 1 0
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
6 to 4 = 2
4 to 1 = 3
1 to 1 = 0
1 to 0 = 1
0 to 6 = 6
Step 3: Combine the filters to a string:
2 3 0 1 6 = 23016