Step 1: Divide the number into separate digits:
04267 => 0 4 2 6 7
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
0 to 4 = 4
4 to 2 = 2
2 to 6 = 4
6 to 7 = 1
7 to 0 = 7
Step 3: Combine the filters to a string:
4 2 4 1 7 = 42417