A tiger weighs 180 kg, and a bear weighs twice that of the tiger. How much does the bear weigh?
一只虎体重180千克，一只熊的体重是虎的2倍，这只熊的体重是多少千克？
<gadget id="calculator">180 * 2</gadget>
<output>360</output>

<result>360</result>