NA 
A machine started printing posters at $$9.00 \rm a.m.$$ on Monday at the rate of $$1000$$ posters per hour. After every $$6$$ hours of printing, it was paused for an hour. How many posters were printed by $$\rm 11.00 a.m$$. the next day? 
Options:
* $$20000$$ 
* $$22000$$ 
* $$23000$$ 
* $$26000$$ 