Easy. Like i've said one time, i'm working for several monthes in Suriname, there is nothing to do here out of the work,to go out from Brasil to work here ,it's like underwater diving technique, take a deep breath and wait wait wait. I'm 47 years old ,so i don't need to sleep more than 5 hours a day (It's like this whith the age coming).
So, i think you're good in math. 8+5=13 13-24=-11.
I play GT5 11 hours a day. If it was'nt this game, no way to stay here all this time taming some flyes. Of course, a lot of tunes ,Sunday, 4 tunes.
Have a good day