Need OverSum and UnderSum calculations?
See http://weblogs.sqlteam.com/peterl/archive/2008/08/12/How-to-sum-up-an-unknown-number-of-records.aspx
and http://weblogs.sqlteam.com/peterl/archive/2008/11/23/Bin-packaging.aspx
N 56°04'39.16"
E 12°55'05.25"