Yet another calculator, still a bit different though.
What do you think of it?
Project Link - http://codepen.io/Topzie/full/grEAgA/
I have been debugging and testing it all over again, found some loose ends, but I think I have got them all now.
I know I used lots of code, so I guess I have to change that at some point in the future.
– edit – Except for the extensive code, all issues are solved now (99.9% sure).