Hey, this is a VERY excellent tool. I just was wondering if you could add a PI button, not the constant thin, one that would equal 3.14, and if you could have a option that could show all the work involved. (and i mean ALL of it.) Its because i have this thing and i got the answer 3434.442 as the answer, and i got something different here. And now i want to know what i did wrong. I erase my work on my paper for it to look neat, so... Its gone. I can check it my self. So can you please add this for us? Thanks