Step 1: Divide the number into separate digits:
79681 => 7 9 6 8 1
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
7 to 9 = 2
9 to 6 = 3
6 to 8 = 2
8 to 1 = 7
1 to 7 = 6
Step 3: Combine the filters to a string:
2 3 2 7 6 = 23276