Xiaoqiang spends 18 yuan to buy 3 kilograms of pumpkins, and Xiaoli buys 9 kilograms, how much does it cost?
小强花18元买3千克南瓜，小丽买9千克，需要花多少元．
<gadget id="calculator">18 / 3</gadget>
<output>6</output>

<gadget id="calculator">6 * 9</gadget>
<output>54</output>

<result>54</result>