Complex sentence: On August 21, the group released its 32nd single, "Koisuru Fortune Cookie" The single's music video involved 3,800 extras, the most for any AKB48 and sister group-related video.
Split into simpler sentences: On August 21 the group released its 32nd single, "Koisuru Fortune Cookie". Its music video had 3,800 extras, the most for any AKB48-and sister group-related video.