Students participate in radio performances. If there are 15 people in each row, you can stand in 16 rows; if you stand in each row with 12 people, how many rows can you stand in?
同学们参加广播表演，如果每行站15人，可以站16行；如果每行站12人，可以站成几行？
<gadget id="calculator">15 * 16</gadget>
<output>240</output>

<gadget id="calculator">240 / 12</gadget>
<output>20</output>

<result>20</result>