There are 20 people standing in each row, exactly 12 rows. If there are 16 people standing in each row, how many rows can they stand in? (answer with ratio)
五年级同学团体表演，每行站20人，正好站12行，如果每行站16人，可以站多少行？(用比例解答)
<gadget id="calculator">20 * 12</gadget>
<output>240</output>

<gadget id="calculator">240 / 16</gadget>
<output>15</output>

<result>15</result>