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There is only one decimal point in the number Pi
It takes a lot of concentration and free time to calculate the billionth digit of pi. The billionth digit of pi is nine.
The billionth digit of pi is 9. http://www.geocities.com/ultrastupidneal/Knowledge-Mathematic-Fact.html
It's the floor of pi*1000000000.
It's pi not pie not enough room here for a billion places