As I understood, you need to add the textField on your ActiveForm and to set its value calculated from two another textfields. In this case you should use Chtml::textfield(...) with value = ($model->Quantity) * ($model->Hold). I mean smth like.
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.