Wang Lan and Wang Jiying walked towards each other at the same time from two places 2,400 meters apart. Wang Lan has 110 meters per branch, and Wang Jiying has 90 meters per branch. If a dog and Wang Lan are walking in the same direction at the same time, each branch is 500 meters, and when it meets Wang Jiying, it will immediately turn around and run towards Wang Lan, and then run towards Wang Jiying after meeting Wang Lan... Keep running back and forth until the two How many meters did the dog run before the person met?
王斓与王继颖两人同时从相距2400米的两地相向而行．王斓每分行110米，王继颖每分行90米．如果一只狗与王斓同时同向而行，每分行500米，遇到王继颖后，立即回头向王斓跑去，遇到王斓后再向王继颖跑去…这样不断地来回跑，直到两人相遇为止，狗一共跑了多少米？
<gadget id="calculator">110 + 90</gadget>
<output>200</output>

<gadget id="calculator">2_400 / 200</gadget>
<output>12</output>

<gadget id="calculator">500 * 12</gadget>
<output>6_000</output>

<result>6_000</result>