Translation of quinientos

If I wanted to integrate the above demo on our page, would we need to work with Vocabulix or do you have some other options? Could you send me some samples of other teachers, who integrated this demo?
This perilous reaction, due to trivial, conventional thinking of us might lead to direct violence or at least to its support. Furthermore it can destroys one's good intensions and qualities.
After a short guided tour we came back to pick up our luggage and left to the airport. When the airplane took off it was already dark outside. We were surprised about the airline's good condition and service.