~Do not go to posted coordinates, there is nothing there. It is just a place to park the icon~
Taylor Swift has been known to hide easter eggs through her wardrobe, music, visual media, and more, that leads her fans to draw conclusions about her future plans. 90% of the time, it's a hindsight is 20/20 situation. However, every now and then a perceptive swiftie figures it out. One time Taylor Swift used cleverly disguised math games to leak a clue. Now swifties everywhere find themselves adding and subtracting the "Taylor Swift Numbers" to arbitrary things as a way to seek out the next clue.
Luckily for you, this Swiftie Equation is not that random.
To find the coordinates of the cache:
N 42 42.aaa, w 83 14.bbb
To find A: Subtract the 4 digit year Taylor Swift was born from 2739.
To find B: Add the number Taylor Swift used to write on her hand to 789.