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: 640 => 6 4 0 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 6 to 4 = 2 4 to 0 = 4 0 to 6 = 6 Step 3: Combine the filters to a string: 2 4 6 = 246