The speeds of A, B, and C are 75 meters, 80 meters, and 100 meters per minute, respectively. A and B start from A, and C start from B, facing each other at the same time, and C meets A 3 minutes after meeting B. Find the distance between A and B.
甲、乙、丙每分钟的速度分别为75米、80米、100米．甲、乙从A地，丙从B地，同时相向出发，丙遇上乙后3分钟再遇到甲．求A、B两地的距离．
<gadget id="calculator">75 + 100</gadget>
<output>175</output>

<gadget id="calculator">80 - 75</gadget>
<output>5</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">80 + 100</gadget>
<output>180</output>

<gadget id="calculator">175 * (3/5) * 180</gadget>
<output>18_900</output>

<result>18_900</result>