For an eleven-digit number, the highest digit is the largest digit, which is exactly three times the number in the billion digit, the sum of the digits in the ten million digit and the billion digit is 8, and the rest of the digits are all 0. What is the eleven digit number?
一个十一位数，最高位上是最大的一位数，它正好是亿位上数字的3倍，千万位与亿位上的数字的和是8，其余各位上都是0．这个十一位数是多少？
<result>90_350_000_000</result>