The sixth grade students of Xinxin Primary School participated in the queue training, with 32 people standing in each row, exactly 15 rows. If there are 30 people standing in each row, how many rows should they stand in? (Solve using ratio method)
欣欣小学六年级同学参加队列训练，每行站32人，正好站15行．如果每行站30人，要站多少行？(用比例方法解答)
<gadget id="calculator">32 * 15</gadget>
<output>480</output>

<gadget id="calculator">480 / 30</gadget>
<output>16</output>

<result>16</result>