Among the fifth grade students, there are 24 people participating in the wireless telephone group, the number participating in the electronic computer group accounts for 1/3 of the whole grade, and the remaining students are equal to one-seventh of the whole grade. Just ask, how many people are there at least in this grade?
五年级学生中，参加无线电话的小组的有24人，参加电子计算机小组的人数占全年级人数的(1/3)，剩下的学生人数等于全年级人数的七分之几．试问，这个年级最少有多少人？
<result>432</result>