Step 1: Divide the number into separate digits:
76032 => 7 6 0 3 2
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
7 to 6 = 1
6 to 0 = 6
0 to 3 = 3
3 to 2 = 1
2 to 7 = 5
Step 3: Combine the filters to a string:
1 6 3 1 5 = 16315