QUESTION: Fix punctuation: Here Marie and Knut Hamsun stayed for 10 months during the years 1909  1910 The Castle was Knut Hamsuns scriptorium
ANS: Here Marie and Knut Hamsun stayed for 10 months during the years 1909 - 1910. The Castle was Knut Hamsun's scriptorium.

QUESTION: Fix punctuation: The packaging is marked CE and 12 months
ANS: The packaging is marked "CE" and "+12 months".

QUESTION: Fix punctuation: The FC Wireless v3003 ACDC Voltage Measurement Kit is part of the Fluke Connect team of wireless test tools
ANS: The FC Wireless v3003 AC-DC Voltage Measurement Kit is part of the Fluke Connect team of wireless test tools

QUESTION: Fix punctuation: c must be valid for at least five years and be renewable automatically
ANS:
(c) must be valid for at least five years and be renewable automatically.