Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 27°C. We apply continuously 164°C heat to the field 4x7
What is the temperature (rounded to whole numbers) in the field 9x8 after 126 iterations according to the Gauss-Seidel iteration

Field in the beginning

27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727
27272727272727272727

Field after 4 iterations (rounded after 4th iteration)

4689999863
611131516161614116
813171920202018147
915192123242321168
916202531312824189
9162439544838292010
91836711178354362311
9214811327812466392311
7173672117815131188
49193447382617105

Temperature in field 9x8 after 126 iterations: