Okay, so I see what I did!! On that specific calculator it asks you two different things:
Extra fabric on each side for border?
AND
Extra fabric on each side for finishing?
I entered 6 for both sections not reading the second one very clearly because I thought it was the same as the first one and by putting 6 by each of those it gave me a huge fabric piece number! Which actually makes sense for how I entered it.
I am very sorry about confusion and lack of reading on my part!! I did it correctly this time and entered 3 inches for fabric on each side of the border and I left the second entry at zero and it gave me the following:
Stitched area: 6" x 7 1/8"
Fabric size: 12 1/2" x 13 1/2"
Again, I apologize for my error and thank you all so much for correcting this for the original poster :)
~Kristi @ ECS