Add spaces: fortherestorationofabeautiful,natural-lookingtooth.

Answer: for the restoration of a beautiful, natural-looking tooth.

Add spaces: Thecabinisapprox.9.9squaremeters.

Answer: The cabin is approx. 9.9 square meters.

Add spaces: Isnoteasy,becausethemp3isencoded,sothatthevolumeisnotsomethingyoucancalculateandmodifyeasily.

Answer:
Is not easy, because the mp3 is encoded, so that the volume is not something you can calculate and modify easily.