[填空题]
Landmarks are placed2dj cyr9 ok)1x ai:t- bj,ktv8 8gqeum2 long the road from London to Edinburgh and the distance between each landmark is 16.1,-28ieq:v8jkubgtm t $\mathrm{~km}$ . The first landmark placed on the road is 124.7 $\mathrm{~km}$ from London, and the last landmark is near Edinburgh. The length of the road from London to Edinburgh is 667.1 $\mathrm{~km} $.
1. Find the distance between the fifth landmark and London.
2. Determine how many landmarks there are along the road.
