Within the fourth subnet created from the parent network 192.168.10.0/24 with a mask of 255.255.255.192 (/26), what is the highest assignable (usable) host IP address?

A network engineer is using the parent network 192.168.10.0/24 and a new subnet mask of 255.255.255.192 (/26). What is the Network Address of the third subnet created from this parent network? (Assume the first subnet is 192.168.10.0.)

If the entire 192.168.10.0/24 network is divided using a /25 subnet mask, how many equal-sized subnets will be created in total?