The distance between the two places is 55 kilometers. Two people, A and B, start from the two places at the same time and walk toward each other. A walks 5 kilometers per hour and B walks 6 kilometers per hour. A takes a dog, and the dog walks 10 kilometers per hour. The dog starts with A, and when it meets B, it turns around and walks to A, and when it meets A, it goes back to B. Until the two meet. How many miles did the dog walk in total?
两地相距55千米，甲乙二人同时从两地出发相向而行．甲每小时走5千米，乙每小时走6千米．甲带着一只狗，狗每小时走10千米．这只狗同甲一起出发，碰到乙的时候它就掉头往甲这边走，碰到甲时又往乙这边走．直到两人相遇．这只狗一共走了多少千米？
<gadget id="calculator">5 + 6</gadget>
<output>11</output>

<gadget id="calculator">55 / 11</gadget>
<output>5</output>

<gadget id="calculator">10 * 5</gadget>
<output>50</output>

<result>50</result>