A train travels between A and B for 18 hours. It travels 70 kilometers per hour and returns 25% faster than the time when it goes. Ask about the distance between A and B.
一辆火车往返甲、乙两地一共用去18小时，去时每小时70千米，回来时比去时的速度快25%，问甲、乙两地的路程．
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">18 * (5/9)</gadget>
<output>10</output>

<gadget id="calculator">70 * 10</gadget>
<output>700</output>

<result>700</result>