Math must be hard for you. Nine new teams? At most this will be one new team for that amount, or do you think salary is the only cost?Reading can be hard. It's okay.
Year-on-year means additional investment on top of whatever they have been making. $180 million at $100K per year means 1,800 new employees. At roughly 200 employees per team (which is more than enough for big AAA games), that is 9 new teams, equivalent to 9 new studios in just 2021.