What do the numbers stand for?
What do 64/27 mean?
How many workstation can be connected to the network address?

Class b network

192.115.103.64 is your IP address.
/27 is the subnet prefix, which in decimal would be 255.255.255.224
You can have up to 30 hosts within this subnet.

192.115.103.64 is your IP address.
/27 is the subnet prefix, which in decimal would be 255.255.255.224
You can have up to 30 hosts within this subnet.

192.115.103.64 is actually the NETWORK address, not the IP Address of a machine or other host. The network address is how a router knows if it is responsible for a group or IP addresses or not, and where to send them. The 192.115.103.64/27 network would include all IP addresses from 192.115.103.64 to 192.115.103.95, the first being the network address, and the last being the broadcast address for the network... leaving 30 IP addresses usable for computers/routers/other devices connected to that physical network segment.

192.115.103.64 (The Subnet IP or Network) 255.255.255.224 (SubnetMask) 0.0.0.31 (Inverse Mask or Wild Card)
30 (Subnet Size or Number of Hosts) 192.115.103.65 to 192.115.103.94 (Host Range) 192.115.103.95 (Broadcast IP)