Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 40°C. We apply continuously 83°C heat to the field 1x1
What is the temperature (rounded to whole numbers) in the field 7x4 after 53 iterations according to the Gauss-Seidel iteration

Field in the beginning

40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040
40404040404040404040

Field after 4 iterations (rounded after 4th iteration)

245035241816141295
50142694332282522168
35695745383432282011
24434543403835312312
18323840393937332513
16283438393938342513
14253235373837332413
12222831333433292111
916202325252421158
5811121313131184

Temperature in field 7x4 after 53 iterations: