Just found out about this, most Casio calculators give a rational multiple of pi as an answer to 11⁶/13, which shouldn't be possible : r/mildlyinteresting
pi`à la calculatrice
Calculatrice Scientifique Casio FX-85GTX, piles et solaire | RS
How to use Pi on the Casio fx-260 calculator - YouTube
Comment se servir d'une calculatrice scientifique
Comment se servir d'une calculatrice scientifique
Graph 90+E | CASIO
TI-Planet | [Casio fx-92+SC] Courbe de Koch (étapes 1 à 4) - Casio
Calculatrice scientifique Casio FX 92 collège – Zone Affaire