Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 7°C. We apply continuously 147°C heat to the field 1x1
What is the temperature (rounded to whole numbers) in the field 5x3 after 125 iterations according to the Gauss-Seidel iteration

Field in the beginning

7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777

Field after 4 iterations (rounded after 4th iteration)

347344221164321
73225904020117532
4490613520128642
2240352517129752
1120201713108752
61112121098752
4789887642
3567776542
2345554431
1222222211

Temperature in field 5x3 after 125 iterations: