Two people, A and B, start running at the same time at both ends of the runway 120 meters apart. A runs 6 meters per second, and B runs 4 meters per second. Running back and forth for 5 minutes, how many times did the two meet each other head-on?
甲、乙两人在相距120米的跑道两端同时起跑，甲每秒跑6米，乙每秒跑4米．往返跑5分钟，两人共迎面相遇多少次．
<gadget id="calculator">6 + 4</gadget>
<output>10</output>

<gadget id="calculator">120 / 10</gadget>
<output>12</output>

<gadget id="calculator">300 - 12</gadget>
<output>288</output>

<gadget id="calculator">2 / 10</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">120 * (1/5)</gadget>
<output>24</output>

<gadget id="calculator">288 / 24</gadget>
<output>12</output>

<gadget id="calculator">12 + 1</gadget>
<output>13</output>

<result>13</result>