Will 1.2.3 These nine numbers are filled in the nine squares of the square so that the sum of the numbers in each row, column and three squares on the diagonal line is equal to 15? In the lattice of a 3 × 3 square □□□ □□□ This is in a square Just tell me what it is. Better give me the formula. I'll give it to whoever tells me

Will 1.2.3 These nine numbers are filled in the nine squares of the square so that the sum of the numbers in each row, column and three squares on the diagonal line is equal to 15? In the lattice of a 3 × 3 square □□□ □□□ This is in a square Just tell me what it is. Better give me the formula. I'll give it to whoever tells me

6 1 8
7 5 3
2 9 4