and B are walking towards each other from two places 1100 meters apart. A walks 65 meters per minute, and B walks 75 meters per minute. After A starts 4 minutes, B starts to start. B brings a dog and B at the same time. Starting off, the dog runs towards A at a speed of 150 meters per minute. When it meets A, it immediately turns back and runs towards B. After meeting B, it turns back and runs towards A. The dog does not stop until A and B meet. How far did the dog run?
甲、乙两人从相距1100米的两地相向而行，甲每分钟行65米，乙每分钟行75米，甲出发4分钟后，乙才开始起步，乙带了一只狗和乙同时出发，狗以每分钟150米的速度向甲奔去，遇到甲后立即回头向乙奔去，遇到乙后又回头向甲奔去，直到甲乙两人相遇时狗才停住，这只狗共奔跑了多少路程？
<gadget id="calculator">65 * 4</gadget>
<output>260</output>

<gadget id="calculator">1_100 - 260</gadget>
<output>840</output>

<gadget id="calculator">65 + 75</gadget>
<output>140</output>

<gadget id="calculator">840 / 140</gadget>
<output>6</output>

<gadget id="calculator">6 * 150</gadget>
<output>900</output>

<result>900</result>