# 输入一个奇数,判断最少几个9除以该数的结果为整数
# 999999 / 13 = 76923
if __name__ == '__main__':
zi = int(input("输入一个奇数:
"))
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("%d个9可以被%d整除:%d" % (c9, zi, sum))
r = sum / zi
print('%d / %d = %d' % (sum, zi, r))