The distance between A and B is 2400 meters. A starts from A and B at the same time, and runs back and forth between A and B. A runs 300 meters per minute, and B runs 240 meters per minute. They stop after 35 minutes. When A and B met, how many times were they closest to A? How many meters is the closest distance?
A、B两地相距2400米，甲从A地、乙从B地同时出发，在A、B间往返长跑，甲每分钟跑300米，乙每分钟跑240米，在35分钟后停止运动．甲、乙两人在第几次相遇时距A地最近？最近距离是多少米？
<gadget id="calculator">2_400 * 4</gadget>
<output>9_600</output>

<gadget id="calculator">1 + 2 + 2 + 2</gadget>
<output>7</output>

<gadget id="calculator">1 + 2</gadget>
<output>3</output>

<gadget id="calculator">300 + 240</gadget>
<output>540</output>

<gadget id="calculator">2_400 / 540 / 3</gadget>
<output>40/27 = around 1.481481</output>

<gadget id="calculator">3 * 300 * (40/27)</gadget>
<output>4_000/3 = around 1_333.333333</output>

<gadget id="calculator">7 * (4_000/3)</gadget>
<output>28_000/3 = around 9_333.333333</output>

<gadget id="calculator">9_600 - (28_000/3)</gadget>
<output>800/3 = around 266.666667</output>

<result>800/3 = around 266.666667</result>