I'm a few Euros out (anyone find them?), but maybe the pay table is slightly different on the version Zyvera played vs the Pragmatic website. Anyway here is the line by line breakdown of his win.
3 Wilds (3W) = 20x
4 Jacks (4J) = 1.2x * 2 = 2.4x
4 Queens (4Q) = 1.2x * 2 = 2.4x
3 Aces (3A) = 0.4x * 2 = 0.8x
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17 lines @ 20x = 340x
12 lines @ 2.4x = 28.8x
8 lines @ 0.8x = 6.4x
TOTAL = 375.2x
Multiplier - 8 x 375.2 = 3001.6x
15 Euro bet = 15 x 3001.5 = 45,024
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Line 1 - 3W and 4Q
Line 2 - 3W
Line 3 - 3A
Line 4 - 3W and 4Q
Line 5 - 3A
Line 6 - 3W
Line 7 - 3W and 4Q
Line 8 - 3W and 4J
Line 9 - 4A
Line 10 - 3W
Line 11 - 3W and 4J
Line 12 - 3W and 4Q
Line 13 - 3A
Line 14 - 3W and 4Q
Line 15 - 3A
Line 16 - 3W and 4Q
Line 17 - 3W and 4Q
Line 18 - 3W
Line 19 - 3A
Line 20 - 3W and 4J
Line 21 - 3A
Line 22 - 3W and 4J
Line 23 - 3W
Line 24 - 3W and 4J
Line 25 - 3A