Zhi went to a blackjack table at the casino. At the table, the dealer has just shuffled a standard deck of 52 cards.

Zhi knows that getting 21, or a blackjack, is the best hand possible. She really likes her chances when she is dealt an Ace card first. Zhi wonders what her chances are of getting an Ace if she gets a red card.

What is the probability that the card is an Ace, given that it is a red card?

i am just stuck and don't know how to set this problem up. Do I do 4/52 divided by 26/52 because there's 26 red cards? Or is this asking about how many red aces there are?