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Ordered casio fx991ms from an insta-commerce app yesterday and kept it on my bed open. My sister was sitting right beside it and using her phone. I'm not sure why but she started weeping for some reason (break up maybe?) and a drop fell on the 3/π key of my casio fx991ms. I quickly wiped off the tear but it was too late, the salt water probably destroyed the PCB and now I can't write π with a shift+3 combo. I did try elevating it but that did no good. This is so stupid I wanna kms 😭✌🏻. They ain't got another one in stock so I'll hafta downgrade to FX82ES.