Students line up during the break between classes. If there are 20 people in each row, there will be exactly 28 rows. If there are 16 people standing in each row, how many rows can they stand in?
大课间活动时同学们排队，若每行站20人，正好站28行．如果每行站16人，可以站多少行？
<gadget id="calculator">28 / 16</gadget>
<output>7/4 = around 1.75</output>

<gadget id="calculator">20 * (7/4)</gadget>
<output>35</output>

<result>35</result>