Dell E6400 18650 > Need info

Got this battery and I can’t find info on the web using Google Yahoo.
It came from a Dell laptop battery E6400, 11.1V, 7800mAh/87Wh
Is my computation right?

11.1V/3 = 3.7V for 3P/3S
7800mAh/3 = 2600mAh for each cell?

:beer: