A car drives from place A to place B. It travels the whole distance (1/7) in the first hour and (2/5) the whole distance in the second hour. At this time, it is still 96 kilometers away from place B. How many kilometers is the road between A and B?
一辆汽车从甲地开往乙地，第一小时行驶了全程的(1/7)，第二小时行驶了全程的(2/5)，这时距离乙地还有96千米．甲乙两地间的公路长多少千米？
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (1/7) - (2/5)</gadget>
<output>16/35 = around 0.457143</output>

<gadget id="calculator">96 / (16/35)</gadget>
<output>210</output>

<result>210</result>