I have a few PDF's for work that I would like to use on my N810. The forms have simple math calculations in them. When I use them on my desktop PC (in Adobe reader) it works, however, I can't find a way to get any viewer on my tablet to calculate the math. Without going to Mer or something exotic is there any viewer/editor that will let me use my forms to calculate? I have tried reducing the size of the files, etc. but to no avail. Thanks