This is the 46th most frequent Norwegian word.
mange
"Many" or "a lot of."
Here, 'mange' is used as a quantifier to indicate a large number of books.
Jeg har mange bøker i hyllen.
I have many books on the shelf.
In this sentence, 'mange' again serves as a quantifier meaning several or numerous reasons.
Det er mange grunner til å være glad.
There are many reasons to be happy.
The word 'mange' describes the large amount of 'good experiences,' emphasizing their abundance over a time period.