Examine the balance sheet of commercial banks in the following table. Balance sheet of FDIC-insured commercial banks and savings institutions Note: Column sums may differ from total because of rounding efror. Source: Federal Deposit insurance Corporation, wwwfdicgov, October 2018. a. What is the ratio of real assets to total assets? (Round your answer to 4 decimal places.) b. What is the ratio of real assets to total assets for nonfinancial firms in the following table? (Round your answer to 4 decimal places.) Balance sheet of U.S. nonfinancial corporations Note: Column sums may differ from total because of rounding error: Source: Flow of Funds Accounts of the United States, Board of Governors of the Federal Reserve System, September 2018