Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 30°C. We apply continuously 138°C heat to the field 7x1
What is the temperature (rounded to whole numbers) in the field 0x7 after 112 iterations according to the Gauss-Seidel iteration

Field in the beginning

30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030
30303030303030303030

Field after 4 iterations (rounded after 4th iteration)

47910122245774620
71215172342932289336
91519222742701056832
10172124293750594524
10172225293339403218
10182326283133322514
10172225272929272111
916202324252523179
712151718191916126
4689101010863

Temperature in field 0x7 after 112 iterations: