Consider an iPhone 12 product. According to the estimates by Fomalhaut Techno Solutions, the U.S. suppliers accounted for 21% of the value in each iPhone 12 product. Assembly work and other suppliers in China accounted for 5% of iPhone 12's value. The unit factory cost of iPhone 12 is $370. Suppose that in 2021, a total of 60 million iPhone 12 were shipped from China to the U.S. Using the factory cost and value-added approach to calculate the impact of shipping iPhone from China to the U.S. on the U.S. trade balance with China. Compare your calculation results from using these two different approaches