Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 14°C. We apply continuously 74°C heat to the field 7x5
What is the temperature (rounded to whole numbers) in the field 2x0 after 54 iterations according to the Gauss-Seidel iteration

Field in the beginning

14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414
14141414141414141414

Field after 4 iterations (rounded after 4th iteration)

2344555432
3678888863
4791010111212105
481011121419241810
581012142034533416
5811121626551275422
581012152339573818
47911131825302312
367810121516137
2344567763

Temperature in field 2x0 after 54 iterations: