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Calculation history, Replay | Casio fx-991ES PLUS User Manual | Page 13 / 46 | Original mode
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Statistical calculations (stat), Inputting data, E-22 | Casio fx-991ES PLUS User Manual | Page 23 / 46 | Original mode
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Calculation range and precision, Function calculation input ranges and precision | Casio fx-991ES PLUS User Manual | Page 39 / 46 | Original mode
