I actually restarted the game, when I did not have any more health. I did this because I thought the reason I could not wright the right answer in the text box, was because I was death.
SPOILER! (Do not read this if you haven't played the game) I actually had a problem in room 12, because on the screen there is a number pad, but the answer is written with letters. This was by the way the room I dead in.