I dont understand how to get the IP addresses for these questions Please help and show work.

3(a) Assume that ICANN has assigned OSU a group of IP addresses, and that the first two bytes (of each assigned IP address) are 130.192. In this case, how many IP addresses are available for OSU? (Use the old class system adopted for IPv4) 3(b) How many IP addresses are available to OSU, if ICANN assigned OSU a class A IP address? (Use the old class system adopted for IPv4). 3(c) How many IP addresses are available to OSU, if ICANN assigned OSU a class C IP address? (Use the old class system adopted for IPv4)