[ 354- (6.91 x 20)] + 1.12 x [(9.36 x 54.09)+(726 x 1.2192)]?

I'm trying to find out my energy requirement...could someone help me get through this problem..thanks

Anonymous2011-03-11T09:14:54Z

{354-(6.91x20)}+1.12x{(9.36x54.09)+(726x1.2192)}
{354-138.2)}+1.12x{506.2824+885.1392}
215.8+1.12x1391.4216
215.8+1558.392192
1774.192192
1774.192.....ans