A watermelon weighs 4 kilograms, and a winter melon weighs 8 kilograms. How many times is the weight of a winter melon a watermelon?
一个西瓜重4千克，一个冬瓜比它重8千克，冬瓜的重量是西瓜的几倍？
<gadget id="calculator">4 + 8</gadget>
<output>12</output>

<gadget id="calculator">12 / 4</gadget>
<output>3</output>

<result>3</result>