Two people, A and B, walk towards each other from places A and B. When they meet, the distance traveled by A is 1.5 kilometers more than twice that of B, and the distance traveled by B is 2/5 of the distance traveled by A. Then How many kilometers are the distance between the two places.
甲、乙两人从A、B两地相向而行，相遇时，甲所行路程为乙的2倍多1.5千米，乙所行的路程为甲所行路程的(2/5)，则两地相距多少千米．
<gadget id="calculator">5 + 2</gadget>
<output>7</output>

<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (2/7) - (2/7)</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">1.5 / (3/7)</gadget>
<output>3.5</output>

<result>3.5</result>