Xiaohong and Xiaoming run face to face from places A and B, which are 3km apart, at the same time. After Xiaohong arrives at place B, she immediately returns to continue running. After Xiaoming arrives at place A, she also immediately returns to continue running. From the beginning of running to the second encounter between the two It took 24 minutes. It is known that Xiaohong runs 200 meters per minute. How many meters does Xiaoming run per minute? (column equation solution)
小红和小明同时从相距3km的甲、乙两地面对面比赛跑步，小红到达乙地后立即返回继续跑，小明到达甲地后也立即返回继续跑，从开始跑到两人第二次相遇用了24分钟，已知小红每分钟跑200m，求小明每分钟跑多少米？(列方程解答)
<gadget id="calculator">3_000 * 3</gadget>
<output>9_000</output>

<gadget id="calculator">24 * 200</gadget>
<output>4_800</output>

<gadget id="calculator">9_000 - 4_800</gadget>
<output>4_200</output>

<gadget id="calculator">4_200 / 24</gadget>
<output>175</output>

<result>175</result>