The walking speeds of Oou, Xiaomei and Koizumi are 60 meters, 80 meters and 100 meters per minute respectively. Ou Ou and Xiao Mei are in place B, and Koizumi is walking towards A with Ou Ou and Xiao Mei at the same time. After Koizumi met Xiaomei, he met Ouou 3 minutes later. So, what is the distance between A and B?
欧欧、小美、小泉三人行走的速度分别是每分钟走60米，80米、100米．欧欧、小美两人在B地，小泉在A地与欧欧、小美两人同时相向而行．小泉与小美相遇后，又过3分钟和欧欧相遇．那么，A、B两地相距多少米？
<gadget id="calculator">60 + 100</gadget>
<output>160</output>

<gadget id="calculator">100 * 3</gadget>
<output>300</output>

<gadget id="calculator">80 * 3</gadget>
<output>240</output>

<gadget id="calculator">300 + 240</gadget>
<output>540</output>

<gadget id="calculator">80 - 60</gadget>
<output>20</output>

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

<gadget id="calculator">160 * 27</gadget>
<output>4_320</output>

<result>4_320</result>