There is a Siberian tiger in the zoo weighing 215 kilograms, and a bison is three times the weight of the Siberian tiger. How much does this bison weigh?
动物园有一只东北虎重215千克，一头野牛的体重是东北虎的3倍．这头野牛有多重？
<gadget id="calculator">215 * 3</gadget>
<output>645</output>

<result>645</result>