Step 1: Divide the number into separate digits:
97372 => 9 7 3 7 2
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
9 to 7 = 2
7 to 3 = 4
3 to 7 = 4
7 to 2 = 5
2 to 9 = 7
Step 3: Combine the filters to a string:
2 4 4 5 7 = 24457