Mathematically, probability is a function over the domain of values of a random variable, where the sum (for discrete variables) or integral (for continuous one

Mathematically, probability is a function over the domain of values of a random variable, where the sum (for discrete variables) or integral (for continuous ones) over the entire domain is equal to 1. Division happens for some random variable operations (for example, conditional probabilities) but generally multiplication and addition are more common In this case, its value at 6 happens to be 1/6, because there are six possible values and for a fair die all have equal values of P[Val].