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 175°C heat to the field 5x3
What is the temperature (rounded to whole numbers) in the field 7x7 after 76 iterations according to the Gauss-Seidel iteration

Field in the beginning

40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40

Field after 4 iterations (rounded after 4th iteration)

6	9	12	13	16	20	20	16	11	6
9	16	20	26	40	55	48	35	23	11
12	20	28	45	81	129	91	58	35	17
13	23	35	63	132	308	143	77	44	20
13	24	36	58	97	146	106	70	43	21
14	24	35	49	68	85	75	57	39	19
13	24	32	41	51	58	55	46	33	17
12	21	28	34	39	42	42	36	26	13
9	16	21	24	27	29	28	25	18	9
5	8	11	13	14	15	14	12	9	4

Temperature in field 7x7 after 76 iterations:

40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40

6	9	12	13	16	20	20	16	11	6
9	16	20	26	40	55	48	35	23	11
12	20	28	45	81	129	91	58	35	17
13	23	35	63	132	308	143	77	44	20
13	24	36	58	97	146	106	70	43	21
14	24	35	49	68	85	75	57	39	19
13	24	32	41	51	58	55	46	33	17
12	21	28	34	39	42	42	36	26	13
9	16	21	24	27	29	28	25	18	9
5	8	11	13	14	15	14	12	9	4

40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40

6	9	12	13	16	20	20	16	11	6
9	16	20	26	40	55	48	35	23	11
12	20	28	45	81	129	91	58	35	17
13	23	35	63	132	308	143	77	44	20
13	24	36	58	97	146	106	70	43	21
14	24	35	49	68	85	75	57	39	19
13	24	32	41	51	58	55	46	33	17
12	21	28	34	39	42	42	36	26	13
9	16	21	24	27	29	28	25	18	9
5	8	11	13	14	15	14	12	9	4

40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40
40	40	40	40	40	40	40	40	40	40

6	9	12	13	16	20	20	16	11	6
9	16	20	26	40	55	48	35	23	11
12	20	28	45	81	129	91	58	35	17
13	23	35	63	132	308	143	77	44	20
13	24	36	58	97	146	106	70	43	21
14	24	35	49	68	85	75	57	39	19
13	24	32	41	51	58	55	46	33	17
12	21	28	34	39	42	42	36	26	13
9	16	21	24	27	29	28	25	18	9
5	8	11	13	14	15	14	12	9	4