Table:
text: 1987–88 Segunda División
Final table
Final table
Position_ Club Played Points Wins Draws Losses Goals_for Goals_against Goal_Difference
19 Granada CF 38 27-11 8 11 19 36 46 -10
20 Cartagena FC 38 24-14 8 8 22 35 79 -44

Question: In the 1987–88 Segunda División, report the total number of goal differences if the position is more than 20?