Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 9°C. We apply continuously 183°C heat to the field 0x4
What is the temperature (rounded to whole numbers) in the field 7x8 after 30 iterations according to the Gauss-Seidel iteration

Field in the beginning

9999999999
9999999999
9999999999
9999999999
9999999999
9999999999
9999999999
9999999999
9999999999
9999999999

Field after 4 iterations (rounded after 4th iteration)

2333333321
81097665542
262619131087652
8058352114109753
2471024927171210863
84634025161210863
32342719141210863
1418171411108753
69109876542
3454443321

Temperature in field 7x8 after 30 iterations: