90 people are needed in 5 rows, how many people are needed in 24 rows?
排成5列，需要90人，24列，需要多少人？
<gadget id="calculator">90 / 5</gadget>
<output>18</output>

<gadget id="calculator">18 * 24</gadget>
<output>432</output>

<result>432</result>