Step 1: Divide the number into separate digits:
76011 => 7 6 0 1 1
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 1 = 1
1 to 1 = 0
1 to 7 = 6
Step 3: Combine the filters to a string:
1 6 1 0 6 = 16106