Calculating subnet addresses and broadcast addresses involves determining the range of IP addresses available within each subnet after subnetting a network. Here's how to calculate subnet addresses and broadcast addresses:

1. **Given Information**:
   - You need to know the original network address (including its subnet mask) and how many subnets you are creating.

2. **Determine Subnet Mask Length**:
   - Decide on the subnet mask length based on the number of subnets needed and the number of hosts per subnet.
   - Convert the subnet mask length to binary to determine the subnet mask. For example, a subnet mask length of /26 translates to a subnet mask of 255.255.255.192 in dotted-decimal notation.

3. **Calculate Number of Subnets**:
   - Determine the number of subnets created by the subnetting process.

4. **Calculate Subnet Size**:
   - Calculate the number of hosts per subnet, excluding the network address and broadcast address.
   - The formula for the number of hosts per subnet is: \(2^{(32 - \text{subnet mask length})} - 2\).

5. **Identify Subnet Range**:
   - Each subnet will have a range of usable IP addresses between the subnet's network address and its broadcast address.
   - To find the subnet address, start with the original network address and increment by the subnet size.
   - To find the broadcast address, start with the subnet address and subtract one from the next subnet's address.
   - Repeat this process for each subnet.

6. **Example**:
   - Let's say you're subnetting the network 192.168.1.0/24 into four subnets.
   - The subnet mask length for four subnets is /26 (as \(2^2 = 4\), requiring two bits for subnetting).
   - The subnet mask for each subnet is 255.255.255.192.
   - Each subnet will have \(2^{32 - 26} - 2 = 62\) usable IP addresses.
   - Calculating subnet addresses:
     - Subnet 1: 192.168.1.0 (network) - 192.168.1.63 (broadcast)
     - Subnet 2: 192.168.1.64 (network) - 192.168.1.127 (broadcast)
     - Subnet 3: 192.168.1.128 (network) - 192.168.1.191 (broadcast)
     - Subnet 4: 192.168.1.192 (network) - 192.168.1.255 (broadcast)

By following these steps, you can accurately calculate the subnet addresses and broadcast addresses for each subnet after subnetting a network. This information is crucial for configuring network devices and allocating IP addresses within each subnet.