Here's a tool, that has saved hours of work from back-testing (suggested to be shared by Harve$t Moon):
Then you click the [Run/Process] button. It'll show you STRAIGHT hits in red, and BOX hits in blue. That's it...I hope it saves you the manual labor.
You have draw results of Pick-3's of the last month; You can paste them in the 1st text box.
Then you want to test a method that produces some generated numbers; You can paste those generated numbers into the 2nd text box.
Then you click the [Run/Process] button.
The bottom of page will display friendly outputs (colored). Reds are Straight hits that you have in your generated numbers. Blues are Box hits.
The tool is free for anyone to use. Login is not required to use the tool. You can click on above image to get to the tool.