You are trying to collect all nine baseball cards for an All-Star team. Each package of cards you can buy has one card of a memeber of the team. The cards are equally distributed among all the packages. How could you use a simulation to estimate the number of packages of cards you will need to buy to get all nine cards?

I think I need to multiply 9x8x7x6x5x4x3x2x1 to get the correct number of packages. I would need to purchase to make sure that I get all the cards. Am I correct or am I WAY off base?