<image> The situation of Tailor Hu processing a batch of garments is as shown in the image. It is known that the time ratios for him to process one children's garment, one pair of pants, and one shirt are 1:2:3. He processes 2 children's garments, 3 pairs of pants, and 4 shirts each day. How many days did it take him to finish processing this batch of garments?