walks 75 meters per minute, B walks 80 meters per minute, and C walks 100 meters per minute. A and B start from the east town, and C enters the west town. How many meters is the distance between the two towns?
甲每分钟走75米，乙每分钟走80米，丙每分钟走100米，甲、乙从东镇，丙人西镇，同时相向出发，丙遇到乙后3分钟再遇到甲．求两镇之间相距多少米？
<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>