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 196°C heat to the field 0x8
What is the temperature (rounded to whole numbers) in the field 4x3 after 107 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
915192123232320158
1017212324252422169
1522252626262522179
3438343028262522169
9070483528252320147
265111563424201815105
80563320141110853

Temperature in field 4x3 after 107 iterations: