Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 29°C. We apply continuously 76°C heat to the field 1x3
What is the temperature (rounded to whole numbers) in the field 6x4 after 125 iterations according to the Gauss-Seidel iteration

Field in the beginning

29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929

Field after 4 iterations (rounded after 4th iteration)

5101111111010973
1325252220191815116
2856453428252320158
47133674333292623179
3262514134302824189
20363835323028251810
1425293030292724189
1119232525252421158
713161819191815116
468910109863

Temperature in field 6x4 after 125 iterations: