Healthy​ Living, a diet​ magazine, collected $ 240,000 in subscription revenue on June 30. Each subscriber will receive an issue of the magazine in each of the next 12​ months, beginning with the July issue. The company uses the accrual method of accounting. What is the amount of Subscription Revenue that has been earned by the end of​ December? (Round any intermediate calculations to two decimal​ places, and your final answer to the nearest whole​ number.)