Step 1: Divide the number into separate digits:
3263 => 3 2 6 3
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
3 to 2 = 1
2 to 6 = 4
6 to 3 = 3
3 to 3 = 0
Step 3: Combine the filters to a string:
1 4 3 0 = 1430