The students line up to do exercises, with 18 people in each line, exactly 24 lines standing. How many rows can stand if 9 people are added to each row?
同学们排队做操，每行18人，正好站24行．如果每行增加9人，可以站多少行？
<gadget id="calculator">18 + 9</gadget>
<output>27</output>

<gadget id="calculator">18 / 27</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">24 * (2/3)</gadget>
<output>16</output>

<result>16</result>