Draw in the box and your digit will be Recognized!!! (Double click to clear)
Your number is most likely (but probably not):
Infinity - 1
Dunno why 5 doesn't work very well. EDIT: We solved the problem. We are now using Base 9, and 5 is no longer a number. It now goes (0,1,2,3,4,6,7,8,9). Enjoy!