John Camey the money manager of the first state bank has estimated that the bank has a 20 percent chance of liquidity deficit of $700 million, a 30 percent chance of a liquidty deficit of $200 million, a 30 Percent chance of a liquidity surplus of $400 million and a 20 Percent chance of a liquidity surplus of $900 million over the next week. What is the bank's expected lliquidity deficit or surplus over the next week? (Please show all of the steps to get to the answer.)