Find a Doctor is a small startup that helps people find a physician that best meets their needs (location, insurance accepted, etc.). During a "slow" time for them, they have 9 staff members taking calls from customers. On average, one call arrives every 5 minutes. On average, each staff member spends 18 minutes with each customer. What is the probability that one of their staff members is busy? Note: Round your answer to 1 decimal place