**Spoiler!**

okay, I have the two keys for to and bottom. I'm trying alpha numeric substitutions but am I adding 17 to the first box, or is that the cake if the top, bottom or sum? Same with -14. Also what kind of answer are we looking for, letters, numbers, if so, how many? There's just a lot of ways to work this and no real clues as to the direction you should take. There's also the gap between letters but what to do with it. It's frustrating to just need that little extra hint.