Do values attached to integers have implicit parentheses?

Given 5x/30x2 I was wondering which is the correct equivalent form.
According to BEDMAS this expression is equivalent to 5∗
x
30
∗x2 but, intuitively, I believe that it could also look like:
5x
30x2
I asked this question on MathOverflow (which was "Off-topic" and closed) and was told it was ambiguous. I was wondering what the convention was or if such a convention exists. According to Wikipedia the order of operations can be different based on the mnemonic used.

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