A car travels from A to B. The cars start from 8:10 am to 10:10 am respectively. The ratio of the distance traveled to the whole journey is 2:5. In the third hour, 105 kilometers have been traveled. At this time, 25% of the whole journey is still left. How many kilometers is the road?
一辆汽车从甲地开往乙地．汽车由上午8点10分别出发到10点10分，行了的路程与全程的比是2：5，第三小时行了105千米，这时还剩全程的25%未行，甲乙两地公路长多少千米？
<gadget id="calculator">25 / 100</gadget>
<output>1/4 = around 0.25</output>

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

<gadget id="calculator">1 - (1/4) - (2/5)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">105 / (7/20)</gadget>
<output>300</output>

<result>300</result>