Most of the calculators, for e.g. mate-calc and galculator are good enough for simple needs. There are two functions which I need and want to use in the calculator - It should have support for two zeroes in addition to single zero. It should have support for history so if I have multiple additions going on, I could trace back (like history) to see if the numbers I entered were correct or not, and if not be able to correct it. This would be a wishlist - if the calculator were to have history of its own of previous calculations done so much the better. While 1. and 2. is available in casio calculators for 20-30 or more odd years now, why don't we have it. If there is, apologies and share the same. The third should also be possible, just like we have 'history' we should have the same functionality into this calculator as well. FWIW I did try all the other modes in mate-calc as well as other calculators but did not find the above functionality.   
Looking for a GUI calculator which has support for two zeroes and history
linux;debian;gui;calculator