Examine the summary of the balance of payments of the United States for 2021. Compute and discuss the balance on the financial account and its subaccounts. A Summary of the U.S. Balance of Payments for 2021 (in \$ billion) Souce The US Dunes of f conomic Anabra Required: R-1. Compute the balance on the U.S. direct investment. a-2. What does the balance on the U.S. direct investment you computed above mean? b-1. Compute the balance on the U.S. portfollo investment. b-2. What does the balance on the U.S. portfollo Investment you computed above mean? c.1. Compute the balance on the U.S. financial account. Required: a-1. Compute the balance on the U.S. direct investment. a-2. What does the balance on the U.S. direct investment you computed above mean? b-1. Compute the balance on the U.S. portfolio investment. b-2. What does the balance on the U.S. portfolio investment you computed above mean? c-1. Compute the balance on the U.S. financial account. c-2. What does the balance on the U.S. financial account you computed above mean? Complete this question by entering your answers in the tabs below. Compute the balance on the U.S. portfolio investment. Note: Negative amounts should br indicated by a minus sign. Round your answer to 1 decimal places. Enter your answers in billions of dollars (e.9. $4,000,000,000 would be entered as $4 )