Two hundred fence posts are to be placed into the ground in a straight line, 5m apart. The fence posts are stacked in a pile along this same line, 5 m from the position of the first post to be put in. Maybell is going to put inthe posts one at a time in order, and each post she puts in is farther away from the pile. Maybell can only carry one post at a time, and so she always walks back to the pile to getthe next post. If Maybell starts at the pile, how many kilometers must she walk to finish the job?