the address block $200,10\mathrm{.}0,\frac{0}{19}$ is to be divided to two subblocks. One is assigned to Network $1$ in the figure, which contains $400$ computers. The second subblock is fassigned to Network $2,$ which contrins $32$ computers. The IP addresses of ser$0$ and Etho interfaces of the router R$1$ are shown on the figure.

$($a$)$ Find the subnet mask and the broadcast address of Netwotk $1.$

$($b$)$ Find the subnet address, subnet mask, and broadcast address of Network $2.$

$($c$)$ Write the routing table of the router R$1,$ In the routing table, you need to determine the destination subnetwork address, the gateway, and the interface name.