Automatic Translation

Please have a look to the page source: https://www.ilserra.it/enigmi/i-numeri-palindromi/ here. It is different from https://www.ilserra.it/en/riddles/i-numbers-palindromes/ for some points of view:
1. they both have the same internal links, even if the internal link is translated with lingoteck (that is: https://www.ilserra.it/matematica/numeri-palindromi/)
2. you see a 105< m="">< 106></ 106> translation even if I put translation="no" in the <pre> tag. This translation does not understand the &alt; html entities anyway
3. I would like not to translate all the part after “Your program” which is a CodeMirror textarea. How can I exclude a class element from a translation?

The page I need help with: [log in to see the link]