Split points awarded on LOL
Solution 1:
Seeing here: https://leagueoflegends.fandom.com/wiki/Rank_(League_of_Legends)
- +20 SP when playing primary and secondary role
- +25 SP when drafting Fill
- +30 SP when autofilled
So if you like to play fill, about 6 games. If you don't, 8.
EDIT: Got screwed by this. Its not playing games. Its winning games. So you have to WIN 6 games or 8 if you dont play fill.