Once there will be no more digits to use for displaying price per gallon they will be forced to display price per liter as it still could fit
Once there will be no more digits to use for displaying price per gallon they will be forced to display price per liter as it still could fit
More likely, the last cent digit will just drop because it isn’t significant (rounding up of course, don’t want to miss an opportunity to squeeze even more!).
https://en.wikipedia.org/wiki/Significant_figures