Repeat Q$2$ with a new $.$pkt that uses address $172\mathrm{.}16\mathrm{.}0\mathrm{.}0/16.$

Subnet the Class B to accomodate $4$ subnets and program the Routers $($last address$)$ and End Devices $(1$st available$)$

Create static routes using only exit interfaces

Verify connectivity with Pings