Consider a small network using private IP addresses $192\mathrm{.}168\mathrm{.}1\mathrm{.}0/24.$ The office has a single public IP address $(203\mathrm{.}0\mathrm{.}113\mathrm{.}10),$ assigned to a router, that can communicate over the Internet. How would this network use NAT to allow an internal device A $(192\mathrm{.}168\mathrm{.}1\mathrm{.}50)$ to communicate with a web server W that is accessible over the Internet? Illustrate using an example of an application message going from A to W and receiving a response. Show the steps at the router.