Macy’s Inc. reported total sales of $1.8 billion for the five weeks ended Feb. 2, an increase of 34.6 percent compared to the same period a year ago. The January period reflects an extra week in fiscal 2012, creating a 53-week fiscal year that occurs about every six years in the accounting cycle for most retailers. But even when looking at same-store sales, which compares four-week periods, Macy’s (NYSE: M) sales were up 11.7 percent in January. “Simply put, January was an outstanding month…