Simple HTML/Javascript/AJAX code

Instructions: - Can use any of these: HTML/CSS/JAVASCRIPT/AJAX/JQUERY - Transfer the text(value) shown in the “output” textarea to the “Improve the output!” textarea automatically(real-time). Also make sure when using copy and paste(mouse) text in the “output” textarea can transfer to the “Improve the output!” textarea without using keyboard. - When clicking the save button in the “Improve the output”, the text inside will save into a new text file([login to view URL]). In addition to that, when clicking the same Save button in the “Improve the output!” at the same time, the text in the “Input” textarea will we saved into another next text file([login to view URL]). The text in the file can be append/add every time user click the button and uses new line each time added. I've attached a document with illustration on how I want it to look like