There is a Siberian tiger weighing 213 kilograms in the zoo, and a bison is three times the weight of the Siberian tiger. How much does this bison weigh?
动物园里有一只东北虎重213千克，一头野牛的体重是东北虎的3倍，这头野牛大约有多重？
<gadget id="calculator">213 * 3</gadget>
<output>639</output>

<result>639</result>