Use the following December 31, 2022 market value balance sheet for BC Bank to answer the question below. Assets (in thousands of $s) Liabilities/Equity (in thousands of $s) Value Duration Value Duration T-bills $1,500 0.75 NOW accounts $6,250 0.50 T-bonds 4,250 9.50 CDs 7,500 7.55 Loans 15,500 12.50 Federal funds 5,500 0.10 Equity 2,000 The bank's manager thinks rates will increase by 0.50% in the next 6 months. To hedge this interest rate risk the manager will use June T-bond futures contracts. The T-bonds underlying the futures contracts have a duration of 14.25 years and a current price of $108 per $100 of face value. How many futures contract should BC Bank enter into to hedge the bank's interest rate risk? Please input your answer as a number of contracts. Please make sure you enter in a negative value with a -. For example, -870