zi = int(input('输入一个数字:'))
n1 = 1
c9 = 1
m9 = 9
sum = 9
while n1 != 0:
    if sum % zi == 0:
        n1 = 0
    else:
        m9 *= 10
        sum += m9
        c9 += 1
print(f'{c9} 个 9 可以被 {zi} 整除 : {sum}')
r = sum / zi
print(f'{sum} / {zi} = {r}')