/// <summary>
/// Returns the the percentage of the number as a value of the specified value (dividend) rounded to the specified decimal point
/// </summary>
/// <param name="dividend">The number to divide by</param>
/// <param name="round">Optional value round the result by</param>
public static double DivideBy(this long d, double dividend, int?round = null)
{
return(Arithmetic.Divide(d, dividend, round));
}