The answer is 9. At first i couldn't make my mind up, but i typed it into Excel which said 9, so i've had a think and i've found the logic behind it now.
The way i see it, the ordering of multiplication isn't actually of importance, it's nothing to do with BODMAS. It's just to do with how it's written. Lots of people think it's 1, but they're looking at the sum the wrong way, and multiplying the denominator by the (1+2). To solve it this way you'd have the sum written 6/(2(1+2)).
I think it's easier to understand if you write it on paper. I've tried to explain it as fully as possible here, showing that it's 9 whether you divide or multiply first. The first step i've shown is the key bit really, just writing it out 'correctly':