// 1. Find the with id 20
// 2. Find all employees with role "Manager"
// 3. Check if there any employee with role "CEO"
// 4. Make sure that all employees are older than 18
// 5. Calculate the total wages we are paying the employees
// 6. How many employees each role has and what is the total wages paid for each role
// 7. Modify the items in the array to also include the full name of the employee
// 8. Say hello to each employee