print("enter the number of class member:")
class_member_value= int(input("number of students:"))
summ=0
for class_member_value in range(class_member_value):


    print(' enter the result one by one')

    c=float(input ("enter the result:"))

    summ=c+summ


average= summ/(class_member_value+1)


print (average)
