The fruit store sells 57 kilograms of apples, and the price per kilogram is 12 yuan. How much should the fruit store charge?
水果店卖出57千克苹果，每千克售价12元，水果店应收多少钱？
<gadget id="calculator">12 * 57</gadget>
<output>684</output>

<result>684</result>