You are bored, and amuse yourself by drawing three cards from a standard deck (52

You are bored, and amuse yourself by drawing three cards from a standard deck (52 cards: 13 each of diamonds, hearts, clubs, and spades).
round your answers to 3 decimal places.
a) suppose that after you draw each card, you put it back and shuffle the deck before drawing another. what is the probability that you get three hearts