Considering he now has 750 million views and it was released 4 months ago meaning he has 1/4 of 1,000,000 left.
4 months = 122 122/4 = 30.5 days left till he gets 1,000,000,000 views! :o
and also considering justin bieber can get 800,000 views this would be easy for psy :P
i always have to...