Two road repair teams, A and B, work together to build a road. Team A builds 800 meters a day, and Team B builds 1,000 meters a day. At first, one team works alone, and then the two teams work together. It takes 10 days to complete the road. It is known that (3/7) team B built this road together, how many meters is the total length of this road?
甲、乙两个修路队合修一条路，甲队每天修800米，乙队每天修1000米，开头由一个队单独修，接着两队合修，一共用10天修完这条路．已知乙队共修这条路的(3/7)，这条路全长多少米？
<gadget id="calculator">800 * 10</gadget>
<output>8_000</output>

<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">1 - (3/7)</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">8_000 / (4/7)</gadget>
<output>14_000</output>

<result>14_000</result>