There is a three-digit number whose tens digit is 0, and the sum of the numbers is 11. If this number is added to 297, the reverse number of this number is obtained (that is, the hundreds digit and the ones digit of the original number are exchanged), then the original What is the three digit number.
有一个三位数其十位数字是0，数字和是11，若此数加上297，由得到这个数的倒转数，(就是原数的百位数字和个位数字交换位置)，那么原三位数是多少．
<result>407</result>