Shuffle the 5, 6, 7, 8, 9 of the playing cards and put them on the table, draw any one of them, what is the probability that the number on the card is less than 7
将扑克牌中的5、6、7、8、9洗一下反扣在桌上，从中任意摸一张，摸到牌面上的数小于7的可能性是多少
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>