QUESTION: Fix punctuation: My name is Marcos from Brazil great fan of yours
ANS: My name is Marcos from Brazil, great fan of yours...

QUESTION: Fix punctuation: There is a known bug in Excel that makes errors in hyperlinks if you sort the cells
ANS: There is a known bug in Excel that makes errors in hyperlinks, if you sort the cells.

QUESTION: Fix punctuation: The Gedser Lighthouse was built in 1802 and before that a marking light made by a charcoal fire could be seen up to 10 kilometers from the shore that is out to the Gedser Reef Lightship
ANS: The Gedser Lighthouse was built in 1802, and before that a marking light made by a charcoal fire could be seen up to 10 kilometers from the shore, that is out to the Gedser Reef Lightship.

QUESTION: Fix punctuation: So that night I did that
ANS:
So that night I did that.