Sunset Shimmer returns to Equestria for a visit after a long stint in the human world, and she’s almost forgotten one of the most frustrating parts of living in Equestria.

Takes place shortly after Princess Twilight's coronation.
Content warning: contains frustrating arithmetic

Edit: thank you all so much for the wonderful response on this fic! After over 9 months dormant on this site, thank you for helping me make this epic comeback a reality!