I’ve never seen a rule that extended the parenthetical precedence outside the parenthesis.
I don't know what to tell you MM, the way I was taught was that if there was a number immediately next to the parenthesis, then that number was to be included in the results from doing the the parenthesis first.
ie:
a(b+c) = (a * (b + c))
I've got to say from watching the discussion, this appears to be a generational educational difference.