Texas Instruments Graphing Calculator - Black (ti-84+) : Target
This fraction calculator app updated so now I have to pay if I want to add things together : r/assholedesign
Texas Instruments TI-Nspire CX II Handheld Graphing Calculator NSCX2 - Best Buy
Amazon.com : Desktop Calculator 12 Digit with Large LCD Display and Sensitive Button, Solar and Battery Dual Power, Standard Function for Office, Home, School, CD-2786 (Blue) : Office Products