There are 54 playing cards in a deck. If you draw any one of them, the probability of drawing 4 is ((())/(())), and the probability of drawing the Ace of Spades is ((())/(( ))), if the big and small kings are removed, what is the probability of getting a heart on the card.
一副扑克牌有54张，从中任意摸一张，摸到4的可能性是((())/(()))，摸到黑桃A的可能性是((())/(()))，如果去掉大、小王，摸到牌面是红桃的可能性是多少．
<gadget id="calculator">13 / 52</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>