Al dostum

public static void Main()
{
int firstNumber = Convert.ToInt32(Console.ReadLine());
int secondNumber = Convert.ToInt32(Console.ReadLine());

if(firstNumber%secondNumber == 0)
{
Console.WriteLine(firstNumber+" is a multiple of "+secondNumber);
}
else
{
Console.WriteLine(firstNumber+" is not a multiple of "+secondNumber);
}
}