Step 1: Divide the number into separate digits:
60923 => 6 0 9 2 3
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
6 to 0 = 6
0 to 9 = 9
9 to 2 = 7
2 to 3 = 1
3 to 6 = 3
Step 3: Combine the filters to a string:
6 9 7 1 3 = 69713