compute the duration gap and show step by step solution please

b) The manager for Tyler Bank and Trust has the following assets to manage: Duration Duration Asset Value (in years) Liability Value (in years) Bonds 75,000,000 9.00 Demand Deposits 300,000,000 1.00 Consumer Loans 875,000,000 2.00 Saving Accounts 1,347,000,000 0.50 Commercial Loans 700,000,000 5.00 Compute the duration gap