%average()

    This function enables evaluation of a simple mathematical string and the
    calculation of the average over the given number of @iterations.

    Example:

        if( %average( "5 + 1d20" ) > 10 )
        {
            %echoTo( "This is a fine weapon indeed!", @actor )
        }
        endif

    Example:

        if( %isValid( (@wielded = @actor->eq->wielded) ) )
        \   &&
        \   %itemIsTypeWeapon( @wielded ) )
        {
            if( %average( @wielded->weapon->damageString ) > 10 )
            {
                %echoTo( "This is a fine weapon indeed!", @actor )
            }
            else
            {
                %echoTo( "This weapon could use some improvement!", @actor )
            }
            endif
        }
        endif


    Note: It is important that the mathematical string to be evaluated is a
          string or a string assigned to a variable.  If it is not then the
          calculation will have already been performed and the average will be
          constant based on that initial value.