It is possible to extend the class generated for the table; extending the class you can define custom field and in such a field you can calculate (by code using, for example, Linq) the desired total using as parameter the other field of the record.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.