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Casio FX-82MS 2nd Gen Non-Programmable Scientific Calculator, 240 Functions and 2-line Display, Black : Amazon.in: Office Products
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Casio - FX-82MS. I bought it in high school, used it in University and now on my 4th year as a Professional Accountant. Haven't changed the battery once. : r/BuyItForLife
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Before Assuming Malfunction Of The Calculator; Replacing The Battery - Casio fx-82 User Manual [Page 26] | ManualsLib
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