Two people A and B are walking towards each other at the same time at A and B respectively. After meeting at E, A continues to walk to B, and B rests for 9 minutes, and then continues to walk to A. When A arrives at B, B also arrives at A. It is known that A walks 80 meters per minute and B walks 100 meters per minute. What is the distance between A and B in meters?
甲、乙二人分别在A、B两地同时相向而行，于E处相遇后，甲继续向B地走，乙则休息9分钟，再继续向A地行走．当甲到达B地时，乙也恰好到达A地．已知甲每分钟行走80米，乙每分钟行走100米，A、B两地间的距离是多少米？
<gadget id="calculator">100 - 80</gadget>
<output>20</output>

<gadget id="calculator">9 / 20</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">80 * (9/20)</gadget>
<output>36</output>

<gadget id="calculator">100 * 36</gadget>
<output>3_600</output>

<result>3_600</result>