Students do exercises, 20 people stand in each row, exactly 20 rows. If there are 25 people standing in each row, how many rows can they stand in?
同学们做操，每行站20人，正好站20行．如果每行站25人，可以站多少行．
<gadget id="calculator">20 * 20</gadget>
<output>400</output>

<gadget id="calculator">400 / 25</gadget>
<output>16</output>

<result>16</result>