The price of strawberries per kilogram is 8 yuan, how much is the price for buying 3 kilograms of 500 grams of strawberries
每千克草莓的价格是8元，买3千克500克草莓应付多少元
<gadget id="calculator">8 * 3.5</gadget>
<output>28</output>

<result>28</result>