Number of people in calligraphy group, 360*3/8= 135 (person). Number of vocal music group, 135*4/5= 108 (person)
The sixth question
Xiaogang has many stamps. The ratio of the total number of stamps of Xiaoming and Xiaogang is equal to 1/5: 1/3=3/5, that is, Xiaoming's talent accounts for 3/5 of Xiaogang's, so Xiaogang has more.