Subnet and Borrowed Bits graphic view

The division ie. Subnetting can be shown in the example of Figure17 for Class C.

Allocation of Class C IP address in the graphic image - CIDR

Figure 17.
VLSM - CIDR graphic view C class
That I would not writing a lot, here's another table that will show you borrow bits: See Figure18 and Figure19

Figure 18.

Figure 19.
Let's go to the next page tutorial.