The largest animal in the world is a whale in the sea, weighing 15 tons. The largest animal on land is the elephant, which weighs 5 tons. How many times the weight of a whale is an elephant?
世界上最大的动物是海中的鲸鱼，重15吨．陆地上现有最大的动物是大象，重5吨．鲸鱼的重量是大象的多少倍？
<gadget id="calculator">15 / 5</gadget>
<output>3</output>

<result>3</result>