Fortunately, the Joker is worth 1, and the little a card is worth 0 points. The player taking the trick takes all of the cards from the trick and takes them into his hand. This means that is is quite likely that another Big A trick will come up soon. The player stuck with this hot potato at the end of the round earns himself 20 points. Players score points remaining in their hands.
Cards count face value.
Jokers are worth 14, the little a is 15, and the Big A is 20. Also count the points for the little a trick if anyone took it. Tally the scores, and play another round. When you've done five rounds, the player with the lowest score is the winner.