Pro-tech Software acquired all of the outstanding stock of Reliable Software for $21 million. The book value of Reliables net assets (assets minus liabilities) was $9.8 million. The fair values of Reliables assets and liabilities equaled their book values with the exception of certain intangible assets whose fair values exceeded book values by $4.6 million. Calculate the amount paid for goodwill. (Enter your answer in whole dollars.)