A large blue box sits on top of a small orange box on a smooth floor. A force to the right pushes on the large blue box. The coefficient of static friction between the two boxes is 0.30. The coefficient of kinetic friction between the two boxes is 0.20. The coefficient of static friction between the orange box and the floor is also 0.30 and the coefficient of kinetic friction between the orange block and the floor is also 0.20. The weight of the large blue box is 400 Newtons and the weight of the small orange box is 250 Newtons. What is the Normal force of the floor on the orange block in Newtons? Use three significant figures.