Xiaochao bought 12 small fish for 36 yuan. If he wants to buy 18 small fish, how much will it cost?
小超买了12条小鱼共用36元，如果要买18条小鱼，需要多少元？
<gadget id="calculator">36 / 12</gadget>
<output>3</output>

<gadget id="calculator">3 * 18</gadget>
<output>54</output>

<result>54</result>