One of my favorite radio shows is Radiolab, which always presents the listener with an interesting scientific question from across the board. In a recent rerun, Radiolab discussed Stochasticity.
In this article, we will analyze how many atoms of a given trace element are in a presolar SiC grain of a given size. Furthermore, the Jupyter notebook in which this article was written is available via binder, so you can adjust it at any point to change the calculations and adopt it to your needs.