The Student Room Group

Calculator settings, HELP!!

I dont know how it happened but my calculator mode changed for some reason, now every time i press the fraction button, a weird symbol comes up on the screen and makes the answer 0.

I have a CASIO fx-83DT PLUS calculator btw, please help I have my GCSE maths calculator exam tomorrow!!
press shift then the number 9 and press the number 3.

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