The speed of an ordinary train is 85 km/h, and the speed of a high-speed train is 3.6 times that of an ordinary train. What is the speed of the high-speed train in km/h?
普通火车的速度是85千米/时，高速火车的速度是普通火车速度的3.6倍．高速火车的速度是多少千米/时．
<gadget id="calculator">85 * 3.6</gadget>
<output>306</output>

<result>306</result>