Step 1: Divide the number into separate digits:
97795 => 9 7 7 9 5
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
9 to 7 = 2
7 to 7 = 0
7 to 9 = 2
9 to 5 = 4
5 to 9 = 4
Step 3: Combine the filters to a string:
2 0 2 4 4 = 20244