I don’t see how it can be both 1 and 9 though. In my mind it can only be 1 because anything to right of the division sign should be fully evaluated first before using the result in the division operation.
It cannot be 9. Answering 9 requires you to see notation you recognize as unintuitive (if you are not a calculator, in any case), shut up and multiply, and discard that provenance.
Possible answers are 1 and "the question is ill-formed".
Possible answers are 1 and "the question is ill-formed".