Помогите решить 8 задание из егэ информатики

 def dec_to_base7(dec_number): 
    base7_number = "" 
    while dec_number > 0: 
        remainder = dec_number % 7 
        base7_number = str(remainder) + base7_number 
        dec_number = dec_number // 7 
    return base7_number 
 
 
def even_numbers(n): 
    cnt = 0 
    for i in n: 
        if i != '0' and int(i) % 2 == 0: 
            cnt += 1 
    return cnt % 2 == 0 
 
 
cnt = 0 
for i in range(int('100000', 7), int('1000000', 7)): 
    if dec_to_base7(i).count('0') == 1 and even_numbers(dec_to_base7(i)): 
        cnt += 1 
 
 
print(cnt)