q5urgent help asap emergency

help to solve the folowing question

The network 200.100.1.0/24 is assigned. We need to put 45 hosts in each subnet.

1. How many bits are needed on the host portion of the assigned address to accommodate at least 45 hosts? [1]
2. What is the total number of IP addresses that can be used in each subnet? [1]
3. What is the maximum number of subnets that could be created? [1]
4. What is the prefix length (/n) and subnet mask IP for the created subnets? [1]
5. What are the network addresses of all the subnets? [4]
6. Design the network by using appropriate devices (router, switches, PCs), add one PC in each subnet and assign an IP address for PCs and the router interfaces. [4]