How long would it take somebody to go from basic algebra/stats to being able to understand a technical MIRI paper?

Suppose the person:
- is a decent programmer
- is experienced with effective learning and productivity methods
- can dedicate two hours of focused study everyday
- has consumed a lot of non-technical resources, e.g. SuperIntelligence, 80K Hours interviews, FHI podcast, AI-Zombies, GEB, etc.