Please tell how to solve

Dear student,

Basic idea of a magic square is that every column and row adds up to the same number.
Draw a 4x4 grid.
The magic sum of the squares constructed is 87.
In our example 87 is the target number:
87 minus 34 = 53. You then divide 53 by 4, to the nearest whole number. That gives 13 with a remainder of 1 (13 x 4 = 52; 52 + 1 = 53).
Remember the number 13. We call that the quotient, and it’s one of two special numbers you’ll need. The other special number is the quotient plus the remainder. In our case, that’s 14 (13 + 1).
Add your first special number to the 8 that appears in row 1, column 1 of your card: 13 + 8 = 21. Write this down in the corresponding box on your new grid.
You will continue on like this for all 16 spaces in the grid, with four exceptions. When you get to the numbers 13, 14, 15 or 16 on your original card, you have to add the special number plus the remainder.

Regards

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