IsDivisible
Checks if the first numeric argument is divisible by the second one.
- Use the modulo operator (
%) to check if the remainder is equal to 0. 
public static partial class _30s 
{
  public static bool IsDivisible(long dividend, long divisor) 
  {
    return dividend % divisor == 0;
  }
}
 
_30s.IsDivisible(6, 3); // true