Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 5°C. We apply continuously 194°C heat to the field 4x3
What is the temperature (rounded to whole numbers) in the field 6x2 after 75 iterations according to the Gauss-Seidel iteration

Field in the beginning

5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555

Field after 4 iterations (rounded after 4th iteration)

1115996421
127213830191163
162260113723920104
211381133071255727136
3103172125834725136
28203957473219115
2612212826201484
24711141412963
1346787542
1123343321

Temperature in field 6x2 after 75 iterations: