I dont undertand this operation.

Answer 1

The operation is correct because % is for reminders and 14 divided by 3 is 4 reminder 2

Answer 2

The modulo operation (% in any language I know) is the remainder of the integer dividion operation. If you (Integer) divide 14 by 3 the result is 4 and remainder 2.
Therefore 14%3 is 2

Answer 3

The Q in Q&A stands for question. What exactly is the question? What operation/operators? Which language?

Answer 4

Sorry!.The language is php. Operation module %

$num1 =14;
$num2 =3;

echo $num1 % $num2
//result 2 (why, i dont undertand this number)

Answer 5

Thank