You are playing poker with your friends, each of you get 13 cards (no jokers included). How much chance for you to get a Straight flush (It contains five cards of sequential rank, all of the same suit, such as A K Q J 10)? Please write a program in Python to do a simulation for the answer. Thanks a lot.

1. How many ways for having 13 cards?
2. How many ways for 13 cards to be straight?
3. How many ways for 13 cards to be flush?
4. How many ways for 13 cards to be straight flush?