Global Production-Local Production

[Thor446]

When you build more than 2 factories, it gets confusing to manage building one model of car in different places.So, lets say I have 2 factories, one is producing 322 cars, the other is producing 125. The current info boxes show that my global production is 447, and that my selected factory's production is 125. But I need to find out the remainder. In this case, it would be 1000-322, and 678 is the number I'm looking for, so I know to raise my production in the selected factory to 678, without having to do the math manually. It would be nice to have a box that shows this number without having to do the math myself.