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![English Language Learners](//cdn.sstatic.net/Sites/ell/img/apple-touch-icon.png)
A post says
There are 4 rounds to the playoffs: The divisional/first round, the Conference Semi-finals, the Conference Finals, and the NBA Finals.
I guess the word "to" there means
Composing; constituting
source: American Heritage® Dictionary
With that meaning, does it sound natural ...