def multiply_by(string)
			return minute_mult(string) || hour_mult(string) || day_mult(string) || week_mult(string) || month_mult(string) || year_mult(string) || 1
		end
def multiply_by(string)
			return minute_mult(string) || hour_mult(string) || day_mult(string) || week_mult(string) || month_mult(string) || year_mult(string) || 1
		end
Returns seconds to multiply by for the given string

 @param [String] period = the period of time expressed in a literal way
 @return [Fixnum] number to multiply by