A bus travels from City A to City B and arrives in 8 hours; a truck travels from City B to City A and arrives in 10 hours. The car drove from the two cities in opposite directions at the same time, and the distance between them was 112 kilometers after 6 hours. What is the length of the highway between A and B?
一辆客车从甲城开往乙城，8小时到达；一辆货车从乙城开往甲城，10小时到达．辆车同时由两城相向开出，6小时后他们相距112千米．甲乙两城间的公路长是多少千米？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">112 / (2/5)</gadget>
<output>280</output>

<result>280</result>