On 3/3/2020 a firm signed a contract to build a house for $15,000. Costs incurred during 2020 = $5,000 Estimated completion costs at the end of 2020 = $5,000 Costs incurred during 2021 = $4,000 Estimated completion costs at the end of 2021 = $3,000 Costs incurred during 2022 = $2,000 Estimated completion costs at the end of 2022 = $0 What is Revenue for Fiscal 2021? (Do not use punctuations in your response)