instruction: How many students are enrolled in some classes that are taught by an accounting professor?
response: SELECT COUNT(*) FROM class AS T1 JOIN enroll AS T2 ON T1.class_code = T2.class_code JOIN course AS T3 ON T1.crs_code = T3.crs_code JOIN department AS T4 ON T3.dept_code = T4.dept_code WHERE T4.dept_name = 'Accounting'