A car travels from place A to place B. It travels the entire distance (1/7) in the first hour, and travels 12 kilometers longer in the second hour than in the first hour. At this time, it is still 348 kilometers away from place B. A and B How many kilometers are the distance between the two places.
一辆车从甲地到乙地，第一小时行了全程的(1/7)，第二小时比第一小时多行12千米，这时离乙地还有348千米，甲、乙两地相距多少千米．
<gadget id="calculator">12 + 348</gadget>
<output>360</output>

<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

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

<gadget id="calculator">360 / (5/7)</gadget>
<output>504</output>

<result>504</result>