Step 1: Divide the number into separate digits:
59927 => 5 9 9 2 7
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
5 to 9 = 4
9 to 9 = 0
9 to 2 = 7
2 to 7 = 5
7 to 5 = 2
Step 3: Combine the filters to a string:
4 0 7 5 2 = 40752