There is a three-digit number divisible by 9, and the two-digit number obtained after removing the last digit is exactly a multiple of 7. What is the largest of such three-digit numbers?
有一个三位数能被9整除，去掉末位数字后所得到的两位数恰是7的倍数，这样的三位数中最大的是多少．
<result>981</result>