walks 55 meters per minute, B walks 75 meters per minute, and C walks 80 meters per minute. Both A and B start from A at the same time, and C starts from B at the same time. C meets B 4 minutes later. A, what is the distance between A and B?
甲每分钟走55米，乙每分钟走75米，丙每分钟走80米，甲、乙两人同时从A地，丙一人从B地同时相向出发，丙遇到乙后4分钟又遇到甲，则A地与B地的距离是多少米
<gadget id="calculator">75 + 80</gadget>
<output>155</output>

<gadget id="calculator">55 + 80</gadget>
<output>135</output>

<gadget id="calculator">135 * 4</gadget>
<output>540</output>

<gadget id="calculator">75 - 55</gadget>
<output>20</output>

<gadget id="calculator">540 / 20</gadget>
<output>27</output>

<gadget id="calculator">155 * 27</gadget>
<output>4_185</output>

<result>4_185</result>