which is why I said it was an "attempt". I wasn't really trying for obfu I suppose, but the cool way that the actual code to be executed is "encoded" in numbers. Of course, it isn't hard to do... Just reverse that equation with the code in the string and you will get your numbers (as long as you add all those pesky dots.

Granted, not really obfu (execpt maybe for that 'or eval $. and exit' part. Took a while to get the write operations ('or'/'and' to make it work right ;)