Question about the mmr system

I am very new to this game and currently sit at 700 mmr. I am getting 9 plus/minus 2 points substracted or added to my mmr depending on the result of the match. 

I saw that Magnus Carlsen has an mmr of 2800, at the rate in which im gaining points i must win 233 games in a row to reach his mmr. 

My question is: is there some mmr internal mechanic that allows for people who win a lot to climb faster or is it an unavoidable long grind?

Nothing like setting high goals for yourself!  Actually the chess.com rating system is quite different from the one FIDE uses.  It's sole purpose is to try and find you a good match and it's correlation with FIDE ratings is vague at best.  I'd better grab you the article...

Here you go...

https://support.chess.com/article/210-how-do-ratings-work-on-chess-com

oh thank you very much.

MMR? 

Do you play Starcraft 2? 

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Mainly i play hots and wow.

It'll take much longer than 233 games to get good enough to get on the level of Magnus Carlsen.

I recommend starting with a more reasonable goal for now, of about 1000 rating or something.