The school holds a queue broadcasting exercise competition. There are 12 people in each row, which is exactly 20 rows. If there are 12 people in each row, how many rows should they stand in?
学校举行队列广播操的比赛，每排12人，刚好20排，如果每排站12人，要站多少排？
<gadget id="calculator">20 / 12</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">12 * (5/3)</gadget>
<output>20</output>

<result>20</result>