In the United States Federal Budget for 2010, entitled 'A New Era of Responsibility', the DHS was allocated a discretionary budget of $42.7 billion . The end-of-yearDHS Annual Financial Report for financial year 2010 showed a net cost of operations of $56.4 billion , out of total budgetary resources of $83.2 billion . The components with the highest net cost were US Coast Guard , U.S. Customs and Border Protection , and Federal Emergency Management Agency . Revenues of $10.4 billion were generated in the year . According to the Washington Post, "DHS has given $31 billion in grants since 2003 to state and local governments for homeland security and to improve their ability to find and protect against terrorists, including $3.8 billion in 2010."
How many billions of dollars, rounded up to the nearest billion, were remaining from the DHS' budgeted resources after deducting their total operation costs in 2010?
27
number