SQL> SET SERVEROUTPUT ON
SQL> DECLARE
  2    faculty_last_name  VARCHAR2 (20) := 'Cox';
  3    faculty_first_name VARCHAR2 (20) := 'Kim';
  4    faculty_phone      VARCHAR2 (20) := '7155551234';
  5  BEGIN
  6    DBMS_OUTPUT.PUT_LINE
  7      (faculty_first_name
  8       || ' '
  9       || faculty_last_name
 10       || '''s phone number is ('
 11       || SUBSTR (faculty_phone, 1, 3)
 12       || ') '
 13       || SUBSTR (faculty_phone, 4, 3)
 14       || '-'
 15       || SUBSTR (faculty_phone, 7));
 16  END;
 17  /
Kim Cox's phone number is (715) 555-1234

PL/SQL procedure successfully completed.