Leonard's home was damaged by a fire. He also had to be absent from work for several days to make his home habitable. Leonard's employer paid Leonard his regular salary, $2,500, while he was absent from work. In Leonard's pay envelope was the following note from the employer: To help you in your time of need. Leonard's fellow employees also took up a collection and gave him $900. Leonard spent over $4,000 repairing the fire damage. Based on the above information, how much is Leonard required to include in his gross income?