virtualbox.org

Hello!

It's possible to install virtualbox v. 5.1.22 on Ubuntu Server 14.04/16.04?

If it's, how can i do this?

Thank you!

Yes.
The same way you would install any other application on your server. Download it and install.
As for detailed instructions there really isn't any but you can read the user manual for direction.
http://www.virtualbox.org/manual/UserManual.html or specifically http://www.virtualbox.org/manual/UserMa ... linux-host