A Cartier store.John Wreford/SOPA Images/LightRocket via Getty ImagesA woman in Singapore claims "girl math" means her Cartier earrings are basically free.Chloe Liem walked people through her calculations in a TikTok post."Anything is possible with girl math," Liem told The Straits Times.A 20-year-old woman in Singapore is going viral for breaking down the cost of her Cartier earrings on TikTok, and claiming that "girl math" means the jewelry is basically free."I just got a new pair of Cartier earrings for S$3,950, so I thought I'd 'girl math' my way through the purchase," content creator Chloe Liem said in a TikTok post published on September 12.