Table:
text: 1978–79 Segunda División
Final table
Final table
Position_ Club Played Points Wins Draws Losses Goals_for Goals_against Goal_Difference
1 AD Almería 38 47+9 21 5 12 62 44 +18
2 CD Málaga 38 47+9 19 9 10 47 27 +20
3 Real Betis 38 46+8 18 10 10 58 35 +23
4 Real Valladolid 38 46+8 20 6 12 47 32 +15
5 Elche CF 38 45+7 16 13 9 50 31 +19
6 Granada CF 38 44+6 16 12 10 46 34 +12
7 Castilla CF 38 42+4 18 6 14 55 45 +10
8 Cádiz CF 38 41+3 15 11 12 52 47 +5
9 Deportivo Alavés 38 40+2 15 10 13 45 31 +14

text: 1978–79 Segunda División
Final table
Final table
Position_ Club Played Points Wins Draws Losses Goals_for Goals_against Goal_Difference
10 Getafe Deportivo 38 40+2 17 6 15 57 56 +1
11 CD Castellón 38 38 12 14 12 48 43 +5
12 CE Sabadell FC 38 37-1 12 13 13 50 49 +1
13 CA Osasuna 38 37-1 15 7 16 51 51 0
14 Real Murcia 38 35-3 12 11 15 35 52 -17
15 Deportivo de La Coruña 38 35-3 13 9 16 43 45 -2
16 Algeciras CF 38 34-4 13 8 17 40 53 -13
17 Real Jaén 38 34-4 12 10 16 41 55 -14
18 Terrassa FC 38 29-9 9 11 18 34 51 -17

text: 1978–79 Segunda División
Final table
Final table
Position_ Club Played Points Wins Draws Losses Goals_for Goals_against Goal_Difference
19 Barakaldo CF 38 28-10 10 8 20 31 53 -22
20 Racing de Ferrol 38 15-23 4 7 27 22 80 -58

Question: What is the total goal difference over 38 goals played and over 47 goals conceded for the 1978–79 Segunda División?