Input (grade 13): He had a peak Elo rating of 2780, and his 90 total months at world number-one are second all-time behind only Garry Kasparov since the inception of the FIDE ranking list in 1971.
Output (grade 8): He had a peak Elo rating of 2780, and his 90 months at world number one are second only to the record of Garry Kasparov.