You're about to play another imbecilic game where you try and swap around enrichment fractions and burnup rates and pretend that tails assay is 0%
You need ~67500t to produce 9EJ in a large scale burner reactor as evidenced by 67500t being consumed to produce 9EJ in a year in lrge scale burner reactors.
Do that 90 times and you have produced 810EJ or a little over 1.3 years of primary energy.
Use that electricity more efficiently than fossil fuels and it lasts a couple of years to cover everything.
Did it ever occur to you that you come off like as asshole?
I don't get this part:
evidenced by 67500t being consumed to produce 9EJ in a year
followed by this part:
Do that 90 times and you have produced 810EJ or a little over 1.3 years of primary energy.
It sounds like your mixing up 90 years of power with 1.3 years of primary energy. (Also why are you now comparing to primary energy? You made a stink about this earlier.) The answer is beginning to look more like 100 years if we only mine virgin stuff (no recycling of fuel, no dismantling of weapons grade fuel, etc).
Where is your "a few years"? You don't mean using the electricity produced as primary energy do you?