Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 24°C. We apply continuously 172°C heat to the field 3x3
What is the temperature (rounded to whole numbers) in the field 9x9 after 56 iterations according to the Gauss-Seidel iteration

Field in the beginning

24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424
24242424242424242424

Field after 4 iterations (rounded after 4th iteration)

361014141210863
614284438282116115
10286511478493323157
1444114288127674127189
14387812791594028199
1228496759463627189
1021334140363024179
816232728272420147
611151819181714105
3579999753

Temperature in field 9x9 after 56 iterations: