The distance between ports A and B is 210 kilometers. A and B start from A and B at the same time and travel towards each other. They meet each other in 2.5 hours. A travels 38 meters per minute, how many meters per minute does B travel?
A、B港口间的路程是210千米，甲、乙同时从A、B出发相向行，2.5小时相遇，甲每分钟行38米，乙每分钟行多少米？
<gadget id="calculator">210 / 2.5</gadget>
<output>84</output>

<gadget id="calculator">84 - 38</gadget>
<output>46</output>

<result>46</result>