The F-789SGA is affordable on second-hand markets. Emulator development for it is rare due to low demand.
However, I can offer a legitimate alternative report: 1. Official Canon Emulators Canon does not publicly release a standalone emulator for the F-789SGA. This model is a programmable scientific calculator; emulators (if any) are typically for internal/educational use with a valid license. canon f-789sga emulator serial number free
If you need help using the actual calculator’s advanced functions (integration, matrix, equation solving), I’m happy to explain those instead. The F-789SGA is affordable on second-hand markets