I was standing in line in the local supermarket a while ago, and I had the hardest time finding the amount I owed on the screen of the cash register.
When I went back I took my camera and the nice lady thought I was a bit crazy for wanting to take a picture of the register. I noticed though that someone who works there must agree with me, because of the bright orange paper they added around the total.
Note to self for design of forms with numbers: Totals are naturally found at the bottom of the list of items, usually on the right. The upper left is the last place anyone looks, no matter how much attention one draws to it.