Hello Mohammed
In this lab EIGRP is being used as the routing protocol. EIGRP uses a composite metric that is represented by a 32 bit number, which means the metric can range up to 2^32 which is somewhere beyond 4.2 billion. So a metric of 27008000 is not at all unusual.
To see a more comprehensive explanation of the EIGRP metric and how it is calculated, take a look at this lesson.
I hope this has been helpful!
Laz