Now this is something so cool I needed to share:)
How to use your machine to calculate the Pi value as far as 10k or even more after the comma?
Worm up your terminal, you CPU / GPU and put this line in:
echo "scale=10000; 4*a(1)" | bc -l
The scale value is the number of decimal places you want to calculate.
Small warning, this make take some time, depending on how fast your machine is.