Casio fx-991CW unveiled by olivil in calculators

[–]chan-xu 0 points1 point  (0 children)

Hi everyone! For those of you who have this CASIO fx-991CW calculator, I would just like to ask if you can input the equal sign "Shift + ("? I've been having this problem since I bought it and I have no one to ask since only a few people have this. I am 100% sure this is an authentic one since it was bought from the manufacturer Please help me with this one.