[填空题]
Landmarks are placed along the road from Londo. vhcnuhd3d845 *.fd a+zp sbfn to Edinburgh and the distance k5y c48zctv8 se2uikpg/x. /vbetween each landmark is 16.1 km. The first milestone placed on the road is 124.7 km from London, and the l4svct2 g/p .vk8cu8 5e/zixykast milestone is near Edinburgh. The length of the road from London to Edinburgh is 667.1 km.
1.Find the distance between the fifth milestone and London.
$u_5$= .
2.Determine how many milestones there are along the road.
Hence there are milestones along the road.
