Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 39°C. We apply continuously 89°C heat to the field 4x0
What is the temperature (rounded to whole numbers) in the field 7x3 after 109 iterations according to the Gauss-Seidel iteration

Field in the beginning

39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939
39393939393939393939

Field after 4 iterations (rounded after 4th iteration)

6122350132532717115
1018304770513727189
12213141504639312211
13233138424239332413
13233136394038332513
13233035373837332513
13232933363736322412
12202630323332282111
915202224252421157
5810121313121074

Temperature in field 7x3 after 109 iterations: