A = 0
B = 0
D = 0
try:
# test a block of code for errors
    while A == 0:
        C = int(input('Enter a number: '))
        D = D + C
        B = B + 1
except ValueError:
# execute this block if there is a value error
    if C == 'X':
        A = A + 1
print(' ')
print('Total:   ', D)
print('AVERAGE: ', D/B)