Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 7°C. We apply continuously 153°C heat to the field 6x2
What is the temperature (rounded to whole numbers) in the field 8x3 after 98 iterations according to the Gauss-Seidel iteration

Field in the beginning

7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777

Field after 4 iterations (rounded after 4th iteration)

12226162821136
2336194990573013
2351133912441004418
246112760101673716
24610193448392512
246813202522168
24579121414105
2456789974
2344556542
1122233321

Temperature in field 8x3 after 98 iterations: