There is a Siberian tiger weighing 207 kg in the zoo. The weight of a bison is 27 kilograms, which is three times that of the Siberian tiger. How many kilograms does this bison weigh?
动物园里有一只东北虎重207千克．一头野牛的体重比东北虎的3倍还重27千克．这头野牛重多少千克？
<gadget id="calculator">207 * 3</gadget>
<output>621</output>

<gadget id="calculator">621 + 27</gadget>
<output>648</output>

<result>648</result>