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: 684 => 6 8 4 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 6 to 8 = 2 8 to 4 = 4 4 to 6 = 2 Step 3: Combine the filters to a string: 2 4 2 = 242