Students line up to do exercises, 30 people stand in each row, exactly 16 rows. If there are 24 people standing in each row, how many rows can they stand in?
同学们排队做操，每行站30人，正好站16行．如果每行站24人，可以站多少行？
<gadget id="calculator">16 / 24</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">30 * (2/3)</gadget>
<output>20</output>

<result>20</result>