3. A big company has bought a subnet from one class B IP net. It is known that the IP address is 125.110.22.0/23 (23 means the first 23 bits are fixed). There are major 4 departments in this company which requires 95, 271, 63 and 66. In the beginning, the engineer plans to do one IP address bind to one host case, but, he finds that it needs lots of time. Please find a solution for the engineer how to efficiently divide the available IP addresses into different subnets and satisfy the required number of hosts