Sellet Billboard Company entered into an agreement to display billboard advertising for Highlife Incorporated for 10 months for a $ 60,000 fixed fee. The agreement also includes a potential $ 6,000 bonus based on certain goals. Sellet estimates it is 70% likely to receive the entire bonus and 30% likely to receive none of the bonus. What approach should Sellet use to estimate variable consideration? What is the estimate of the consideration amount in this contract?