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: 520 => 5 2 0 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 5 to 2 = 3 2 to 0 = 2 0 to 5 = 5 Step 3: Combine the filters to a string: 3 2 5 = 325