On a 400-meter circular runway, A and B start from the starting line at the same time and run in opposite directions. A runs 4 meters per second, and B runs 6 meters per second. When they meet for the first time at the starting point, they are already How many times have you met on the way?
在400米的环形跑道上，甲、乙两人同时从起跑线出发，反向而跑，甲每秒跑4米，乙每秒跑6米，当他们第一次相遇在起跑点时，他们已在途中相遇了多少次．
<gadget id="calculator">6 - 4</gadget>
<output>2</output>

<gadget id="calculator">400 / 2</gadget>
<output>200</output>

<gadget id="calculator">4 + 6</gadget>
<output>10</output>

<gadget id="calculator">400 / 10</gadget>
<output>40</output>

<gadget id="calculator">200 / 40</gadget>
<output>5</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<result>4</result>