In the Netherlands we learn that 12 / 3 * 2 = 8 because the rule they learned me is to divide and multiply in order of appearance. 13 - 7 + 2 = 8 and not 4 because we do it always by the rule add and subtract in order of appearance.
In order of appearance 6 / 2 (1 + 2 ) = 6 / 2 * 3 = 9 so the Casio fx-50 FH is right.