The school holds gymnastics performances, the number of people is between 70 and 80, with 8 people in each row, 4 people in each row, and 6 people in each row. How many people participated in the gymnastics performance?
学校举办体操表演，人数在70至80人之间，每排8人，每排4人，每排6人，都不余缺．参加体操表演的有多少人．
<result>72</result>