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: 809 => 8 0 9 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 8 to 0 = 8 0 to 9 = 9 9 to 8 = 1 Step 3: Combine the filters to a string: 8 9 1 = 891