Green Company, an accrual basis taxpayer, provides business-consulting services. Clients generally pay a retainer at the beginning of a 12-month period. This entitles the client to no more than 40 hours of services. Once the client has received 40 hours of services, Green charges $500 per hour. Green Company allocates the retainer to income based on the number of hours worked on the contract. At the end of 2020, the company reported as a liability in its financial statements $50,000 of unearned revenues from these contracts. The company also reported $10,000 in unearned rent income received in 2020 from excess office space leased to other companies. Considering only this information, how much gross income must Green report in 2021 for tax purposes