I don't know if you've done the Monte Carlo bit of your course yet, but I invite you to calculate the number of years your PC would have to run to get Pi to that many decimal places.
Also, as a hint, one mildly common line of questioning at interviews goes something like this:
Here's something to be solved, which numerical methods would you use ?
What are the advantages of your approach with respect to MC ?
Is MC the best scheme ?
How do you choose ?
How do you speed up MC ?
When calculating a price using MC, what do you notice about the Greeks ?
What do you do about that ?