From a standard deck, what is the probability of drawing 3 cards of the same suit, without replacement?

When I do this, I want to go with 4 * (13/52 * 12/51 * 11/50) = 22/425

However, I am not sure when I look at other sites... probability of drawing 3 cards - Wolfram|Alpha is an example. The specific way I am trying to do this is through compound events, instead of combination or permutation. Any input would be helpful, thank you!