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 110°C heat to the field 2x1
What is the temperature (rounded to whole numbers) in the field 8x1 after 90 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)

143766442820161395
27751888750352823168
25579271524134282111
20415754484237322312
17324244434138332513
15273539404038332513
14243235373836322412
12212731323332282111
916202324252421157
5810121313121174

Temperature in field 8x1 after 90 iterations: