The distance between Dalin and Xiaolin is 1,400 meters. Dalin brought a puppy and Xiaolin set off from home at the same time and walked toward each other. Dalin walked 60 meters per minute, Xiaolin walked 80 meters per minute, and the puppy walked at a speed of 100 meters per minute. Running back and forth between them, how many meters did the puppy run in total by the time the two met?
大林和小林两家相距1400米，大林带了一只小狗和小林同时从家中出发，相向而行，大林每分钟走60米，小林每分钟走80米，小狗以每分钟100米的速度在他们之间来回跑，到两人相遇时，小狗一共跑了多少米？
<gadget id="calculator">100 * 10</gadget>
<output>1_000</output>

<result>1_000</result>