How do I get back the old calculator?
I just recently upgraded to El Capitan from Mavericks. The calculator in El Capitan is really and truly AWFUL as far as I'm concerned. I don't like the look, I don't like the arrangement of the keys, and it's functionality leaves A LOT to be desired (especially since it can't do simple math in programmer mode).
I really liked the calculator in Mavericks. How do I get it back??
MacBook Pro with Retina display, OS X Mavericks (10.9.3)