[justinmeiners]

How do you draw your 4? The one I used is the "one stroke" 4 where you draw it from left, top, and then down.

[zamadatix]

I quickly realized variations of:

    │  │
    └--┤
       │

Weren't going to work so I switched to the style in the font:

     ╱│
    ∠--┼
       │

And it really liked to give 7, 6, or 2 if I went in the left,upRight,down pattern.

I think I found out the trick though: if you make a sharp 4 like the font you get random results but if you just make smooth loop of it (almost looks like a tilted roller coaster) it gets it every time.

[agency]

I draw mine like a capital H minus the lower left segment and I gave up trying to get it to recognize it. It kept coming up 7 or 9