The fifth grade students participate in the inter-class exercise competition. There are 18 people in each team, and they can stand in 15 rows. Now it is changed to 9 rows. How many people should stand in each team?
五年级同学参加课间操比赛，每队18人，可以站15行，现改为9行，每队应站多少人？
<gadget id="calculator">15 / 9</gadget>
<output>5/3 = around 1.666667</output>

<gadget id="calculator">18 * (5/3)</gadget>
<output>30</output>

<result>30</result>