Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 20°C. We apply continuously 199°C heat to the field 3x2
What is the temperature (rounded to whole numbers) in the field 5x6 after 80 iterations according to the Gauss-Seidel iteration

Field in the beginning

20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020

Field after 4 iterations (rounded after 4th iteration)

392440322114963
8276812281472818115
1446125325139693924157
14398414097603825168
1128517061463424168
920324140342822158
815232728272420147
712172021211916126
5911131414141284
2467777642

Temperature in field 5x6 after 80 iterations: