Downtown Company has consistently used the percentage-of-completion method of recognizing income. In 2018, Downtown started on an $18,000,000 construction contract that was completed in 2020. The following information was taken from Downtowns 2018 accounting records

Progress billing $ 6,600,000

Costs incurred $ 5,400,000

Collections $ 4,200,000

Estimated costs to complete $10,800,000

What amount of revenue should Downtown recognize on the contract in 2018?