Topnotch company uses a Freemium model and has 200,000 users, a 5% conversion rate, and a 10% churn rate. The average cost to serve a Paying User is $100/year and the Annual Revenue/ Paying User is $500/year. The Cost to Support a Free user is negligible.

Calculate Retention Rate, Lifetime of a Paying User, ARPPU, ARPU, Number of Paying Users, CLV of a paying User, and Annual Contribution for Topnotch.

IMPORTANT: Please include managerial perspectives when answering the question (elaborate what the answer means for the company/firm moving forward).