It takes 6 hours for the express train to go from place A to place B, and 8 hours for the slow train to go from place B to place A. The two cars leave opposite to each other at the same time. After 2 hours, the two cars have traveled a total of 280 kilometers. How many miles is the distance between A and B?
快车从甲地到乙地要6小时，慢车从乙地到甲地要8小时，两车同时从两地相对开出，2小时后两车一共行驶了280千米．甲、乙两地间的路程是多少千米？
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/6) * 2</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(1/8) * 2</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/3) + (1/4)</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">280 / (7/12)</gadget>
<output>480</output>

<result>480</result>