ax6761@JakeSparkleChicken When I wanted Casio to support #percent_arithmetic, I did not mean like that!
So, for input of "x+r%" #Casio_fx115W does "100(x+r)/r".
Per its manual https://support.casio.com/pdf/004/fx115W_991W_E.pdf (p E-13), for "x(1+r%)" calculation, input is "xr % +"; could get used to I suppose. Thanks for the note about it.
fx-9750Giii is from the same lineage of fx-{7700,9850G}.