Again with the O of O (I thought I had it licked)

2^3 -10[4 -(-2 +18)3]

8 -10[4 +2 -18 +3]

8 -10[6 -15]

8 -10(-9)

8 + 90

98

But that's incorrect. The book says the answer is 448, so I'm a long way off. The only think I can think of is that it's a distribution problem. Any help is greatly appreciated.