Spider breeding with my caramel albino....so what would the hatchlings be? Het right? But what percent or how does that work??

Please help, this has been a question on my mind for a very long time. I love www.worldofballpythons.com because they have that Genetic Wizard, but would love to know how they come up with the % of het. how do you know when something is Hom instead of Het???

Thanks. Im a noobie!