Seven things I've learned from this thread.
1) I was right in choosing 288, despite being initially confused by the equation.
2) Island is correct when he states this is debated on other forums and the formula is regarded as ambiguous.
48÷2(9+3)
3) Darisc is a Nazi clown, or a Nazi who wears clown shoes (his words).
4) Darisc is a failure. Although he gets the math and correct answer, he fails to prove that the formula is unambiguous, despite his endless groaning to the contrary.
5) Darisc believes ambiguous formulas do not equate to riddles, he also fails.
6) Bill has a grasp of maths.
7) This thread should die.