There is no guarantee of accuracy. Please report any bugs (or better yet, fix them and send me the patch). It is only about 11k uncompressed. It requires murgaLua which is already in the new Puppy. If you do not have murgaLua you can find it on John's web site. You really only need the binary. You can delete the rest of murgaLua if you don't plan on writing programs yourself. Below is a photo of the calculator running in Puppy. You can download the calculator here.