คะแนนผ่านไปกี่ปี (76-73-79-72=300)?ไม่จำเป็นต้องใช้ตารางทั้งหมด
HOW MANY YEARS WAS IT FOR THE SCORE (76-73-79-72=300)?It is not neccessary to use all the tables.
 table_1507806_1:  year [ VARCHAR]  winning_score [ VARCHAR] 
SELECT COUNT(year) FROM table_1507806_1 WHERE winning_score = (76 - 73 - 79 - 72 = 300)