On a highway, it takes 10 hours for a fast train to complete the journey, and 14 hours for a slow train. Now two cars drive from opposite ends of the road. When the fast car completes the journey, the slow car just exceeds the midpoint by 255 kilometers. How many kilometers is the total length of this road?
一条公路，一辆快车行完全程要10小时，另一辆慢车要14小时．现在两辆汽车分别从公路的两端相对开出，当快车行完全程时，慢车正好超过中点255千米，这条公路全长多少千米？
<gadget id="calculator">1 / 14</gadget>
<output>1/14 = around 0.071429</output>

<gadget id="calculator">(1/14) * 10</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(5/7) - (1/2)</gadget>
<output>3/14 = around 0.214286</output>

<gadget id="calculator">255 / (3/14)</gadget>
<output>1_190</output>

<result>1_190</result>