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: 844 => 8 4 4 Step 2: Calculate the distance between each digit and the next (the last digit with the first): 8 to 4 = 4 4 to 4 = 0 4 to 8 = 4 Step 3: Combine the filters to a string: 4 0 4 = 404