A train travels 350 kilometers from A to B in 5 hours. According to this calculation, it will take 9 hours in total. How many kilometers are there between A and B?
一列火车从甲地开往乙地，5小时行了350千米，照这样计算，共要行9小时．甲乙两地相距多少千米？
<gadget id="calculator">350 / 5</gadget>
<output>70</output>

<gadget id="calculator">70 * 9</gadget>
<output>630</output>

<result>630</result>