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: 890 => 8 9 0 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 8 to 9 = 1 9 to 0 = 9 0 to 8 = 8 Step 3: Combine the filters to a string: 1 9 8 = 198