If a card is drawn at random from a standard deck of 52 cards, what is the probability of getting a heart? (Need the actual numbers not just unlikely, likely etc)

As a manufacturer of golf equipment, the spalding corporation wants to estimate the proportion of golfers who are left-handed. how many golfers must be surveyed if we want 99% confidence that the sample proportion has a margin of error of 0.025? assume that a previous study suggests that 20% of golfers are left-handed.