The Gela section of the new line of the Qinghai-Tibet Railway, known as the "Steel Sky Road", was successfully opened on July 1. The railway department has set a milepost every 1,000 meters along the railway. The train departs from the first milepost of "Gerling" station, heading toward Lhasa. After 1 minute, the nearest milepost to the front of the train is 200 meters away from the front of the train. After driving for another 3 minutes, the front of the train has passed 7 mileposts (not counting the first one), so how many meters does the train travel per minute?
被称作"钢铁天路"的青藏铁路新线格拉段已于7月1日顺利开通，铁路部门在铁路沿线每隔1000米处设置一个里程标．火车从"格尔林"车站的第一个里程标出发，几拉萨方向行驶．1分钟后，离车头最近的里程标距车头200米，又行驶了3分钟后，车头已经经过了7个里程标(不算开始的那个)，那么火车每分钟行驶多少米．
<gadget id="calculator">2 * 1_000</gadget>
<output>2_000</output>

<gadget id="calculator">2_000 - 200</gadget>
<output>1_800</output>

<result>1_800</result>