Welcome to your interview.
The question is on your right: Calculate Marketing ROI. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
Explain how you would calculate the return on investment (ROI) for an Internet Brands marketing campaign given specific traffic and conversion metrics.