A helicopter flies 360 kilometers per hour, and a train travels 90 kilometers per hour. How many times does this helicopter travel kilometers per hour than the train?
一架直升飞机每小时飞行360千米，一列火车每小时行90千米．这架直升飞机每小时行的千米数是火车的多少倍？
<gadget id="calculator">360 / 90</gadget>
<output>4</output>

<result>4</result>