Slytherin Sidewalks, Inc. uses the percentage-of-completion method for its construction jobs. In 2018, Slytherin started work on a $30,000,000 construction contract that was completed in 2019. The following information was taken from Slytherin's 2018 accounting records: Progress billings Costs incurred Collections Estimated costs to complete $22,200,000 18,600,000 14,400,000 8,400,000 What amount of gross profit should Slytherin have recognized in 2018 on this contract