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: 420 => 4 2 0 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 4 to 2 = 2 2 to 0 = 2 0 to 4 = 4 Step 3: Combine the filters to a string: 2 2 4 = 224