why we borrow 3 bit from host portion it must to be 2 I am right ? and if no how I can borrow from host how I know that give me example please and explain for me

5- The subnet having the IP address: 222. 20.128.0/20 is allocated to an organization that has 3 departments, show how to subnet this network to 3 independent networks. Give the IP address of each subnet in binary and in dotted decimal notation (a.b.c.d/x) (show your steps, only final answer not accepted) To subnet a network into 3 independent networks, we need to borrow 3 bits from the host portion of the IP address to create 3 subnets. The IP address 222.20.128.0/20 is a Class C address, which means the first 24 bits are the network portion and the last 8 bits are the host portion. The first step is to convert the IP address to binary: - 222=11011110 - 20=00010100 - 128=10000000 - 0=00000000 So the IP address in binary is: 11011110.00010100.10000000.00000000 Now we need to borrow 3 bits from the host portion to create 3 subnets. The new subnet mask would be /23, which means the first 23 bits are the network portion and the last 7 bits are the host portion