The school martial arts team performs, with 18 people standing in each row, and can stand in 20 rows. If each row is changed to 24 people, how many rows can be stood?
学校武术队进行表演，每行站18人，可站20行．如果每行改站24人，可以站多少行？
<gadget id="calculator">20 / 24</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">18 * (5/6)</gadget>
<output>15</output>

<result>15</result>