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: 217 => 2 1 7 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 2 to 1 = 1 1 to 7 = 6 7 to 2 = 5 Step 3: Combine the filters to a string: 1 6 5 = 165