Casio fx-991ES iirc - I haven't found it since moving, and that has reaffirmed how useful I find it to have one, I've reached for it numerous times and been ann

Casio fx-991ES iirc - I haven't found it since moving, and that has reaffirmed how useful I find it to have one, I've reached for it numerous times and been annoyed not to have it. (In lieu of it, I used bc for a while, and now python. Still hope it turns up soon though - this submission's probably going to make me have a look for it again...)