class Employee:
    def __init__(self, first_name, last_name, employee_id):
        self.first_name = first_name
        self.last_name = last_name
        self.employee_id = employee_id
        self.base_salary = 0
    def set_base_salary(self, base_salary):
        self.base_salary = base_salary
        return base_salary

class TeachingStaff(Employee):
    def __init__(self, first_name, last_name, employee_id, teaching_area, category):
        super().__init__(first_name, last_name, employee_id)
        self.teaching_area = teaching_area
        self.category = category
    def get_salary(self, base_salary):
        salary = self.category*10+100/100*self.base_salary
        return salary
    def get_staff_info(self):
        print("First Name: ", self.first_name, "\nLast Name:", self.last_name, "\nEmployee ID:", self.employee_id, "\nArea of Expertise:", self.teaching_area, "\nCategory: ", self.category, "\nSalary: ", get_salary(self, base_salary))

jerry = TeachingStaff('Jerry', 'Smith', 110022123, 'IT', 3)
jerry.set_base_salary(90000)
print(jerry.get_staff_info())