QUESTION: Fix punctuation: DAlembert worked on the Encyclopdie for many years In fact he wrote most of the mathematical articles in this 28 volume work
ANS: D'Alembert worked on the Encyclopedie for many years. In fact he wrote most of the mathematical articles in this 28 volume work.

QUESTION: Fix punctuation: Software Utilities Arum Switcher lifetime free updates
ANS: Software: Utilities > Arum Switcher (lifetime free updates)

QUESTION: Fix punctuation: They love to haggle so be sure to provide them with this opportunity believe me you will benefit from this not only in material terms
ANS: They love to haggle, so be sure to provide them with this opportunity, believe me, you will benefit from this, not only in material terms.

QUESTION: Fix punctuation: Transfer from Samnaun to Munich MUC lentokentt
ANS:
Transfer from Samnaun to Munich (MUC) lentokentta