In mathematics, the term ! means for example 4! = 4*3!, and it all starts with 0!=1. This sequence is used for measuring atoms, to it can get up to some pretty big numbers. This equation can also be expressed with some Greek letters that I would rather not get into because I do not fully understand them, oh wait... I do. I just am unable to type them into this box.
Thanks to me, and to Wikipedia for teaching me calculus like this.
