2627 + 1292.61 = 3919.60999999999Next, I abandoned it for the Calculator application in OS X. It added those numbers according to the mathematic laws with which I have become accustomed, with a result of 3919.61. Then I attempted to add 400, which yielded a result of 4319.610000000001.
I'm afraid I may have broken the universe. Oops.