A watermelon weighs 4 kilograms, and 4 peaches weigh 1 kilogram. The weight of a watermelon is equal to the weight of how many peaches.
一个西瓜重4千克，4个桃子重1千克，一个西瓜的重量等于多少个桃子的重量．
<gadget id="calculator">4 * 4</gadget>
<output>16</output>

<result>16</result>