A and B are 300 meters apart. Xiao Ming and Xiao Jun walked towards each other from places A and B respectively, and the distance between them was 860 meters after 7 minutes. A walks 37 meters per minute, how many meters does B walk per minute?
甲、乙两地相距300米．小明和小军各从甲、乙两地相背而行，7分钟后两人相距860米．甲每分走37米，乙每分走多少米．
<gadget id="calculator">860 - 300</gadget>
<output>560</output>

<gadget id="calculator">37 * 7</gadget>
<output>259</output>

<gadget id="calculator">560 - 259</gadget>
<output>301</output>

<gadget id="calculator">301 / 7</gadget>
<output>43</output>

<result>43</result>