To find the probability that they are both aces, you will find the probability of them being aces in both cases and then multiply these together.
There are 4 aces in a deck of cards.
4 4
52 x 52
You can factor out 4's all the way around to get
1 1 1
13 x 13 = 169
The probability is 1/169 change of both being aces.