There are 6 bottles of beverages, one of which has passed the expiration date, and now I take a bottle from it, what is the possibility that the expiration date has not expired
有6瓶饮料，其中1瓶过了保质期，现从中任取一瓶，没过保质期的可能性是多少
<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<result>5/6 = around 0.833333</result>