In accordance to occult numerological reduction, strings of numbers are added up until we are left with one. For example, 9 is a form of the number of the beast as 666 is 6+6+6=18 & 1+8=9.
Of course, sometimes two or three numbers are left when the partial reduction leads to an occultically significant number. Well, all numbers have been given meanings but I am referring to, for example, Aleister Crowley, et al.’s, favorites such as 11, 77, 93, 175, etc.
Here are some readily available examples.