Pick out all the playing cards of the heart suit from a deck of cards, and randomly draw 1 card from it. What is the probability of drawing 5 of hearts?
从一副扑克中挑出所有的红桃花色扑克牌，任意从中抽1张．抽出红桃5的可能性是多少．
<gadget id="calculator">1 / 13</gadget>
<output>1/13 = around 0.076923</output>

<result>1/13 = around 0.076923</result>