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 131°C heat to the field 4x4
What is the temperature (rounded to whole numbers) in the field 0x7 after 40 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)

3566777652
5810131717151294
610162738342619136
613275491634126168
71738912231005332199
7173463100714731199
715264153473627179
612192632312721147
59131619191714105
2468999752

Temperature in field 0x7 after 40 iterations: