To show you how to calculate the Distances filter for a Pick 3 number here a step by step example.
Step 1: Divide the number into separate digits: 817 => 8 1 7 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 8 to 1 = 7 1 to 7 = 6 7 to 8 = 1 Step 3: Combine the filters to a string: 7 6 1 = 761