To start the HTTP server, use:
$ swipl -f server.pl -g "server(5050)"
Then direct your browser to:
http://localhost:5050/fractions.html
This way, you can use your browser to interact with RITS.
You can try different tasks by appending ?solve=Task, for example:
http://localhost:5050/fractions.html?solve=1/3+1/4
http://localhost:5050/fractions.html?solve=2/5+1/2
Screenshot
