SQL & PL/SQL

I have given employees table as

SQL> desc employees
 Name                                      Null?    Type
 ----------------------------------------- -------- ----------------

 EMPLOYEE_ID                               NOT NULL NUMBER(6)
 FIRST_NAME                                         VARCHAR2(20)
 LAST_NAME                                 NOT NULL VARCHAR2(25)
 EMAIL                                     NOT NULL VARCHAR2(25)
 PHONE_NUMBER                                       VARCHAR2(20)
 HIRE_DATE                                 NOT NULL DATE
 JOB_ID                                    NOT NULL VARCHAR2(10)
 SALARY                                             NUMBER(8,2)
 COMMISSION_PCT                                     NUMBER(2,2)
 MANAGER_ID                                         NUMBER(6)
 DEPARTMENT_ID                                      NUMBER(4)

The question is
Create a query that displays the first eight characters of employees '
last name and indicates the amounts of the salaries with asterisks.
Each asterisk signifies a thousand dollars .sort the data
in desending order of salary . Label the column as Employees and Their salaries

Employees and Their salaries
King            ******************
Kochchar     *********************************
De Haan      *************************

Thank you.