Missing Left Parenthesis

INPUT:
SQL> @insert.sql

OUTPUT:
SQL> insert into people_tbl values
2 '303785523', 'SMITH', 'JOHN', 'JAY', 'MALE', '10-JAN-50')
3 /
'303785523', 'SMITH', 'JOHN', 'JAY', 'MALE', '10-JAN-50')
*
ERROR at line 2:
ORA-00906: missing left parenthesis
SQL>

ANALYSIS:
On line 2 a parenthesis does not appear before the Social Security number. The correct
syntax should look like this:
SQL> insert into people_tbl values
2 ('303785523', 'SMITH', 'JOHN', 'JAY', 'MALE', '10-JAN-50')
3 /