Type in a number in the bar at the bottom. Wait until a variable pops up, and that's your number! Try to use a relatively small number (I can get a result up to 1,448) so you do not come up with <Infinity>. If you type a number such as 1,000,000 you'll just be staring at the screen for 30 seconds until it loads.
I would like to thank Logansphere for his help on my Scratching.
