"123456789101112…484950" is a multi-digit number, from which 80 numbers are crossed out, so that the remaining numbers (in the same order) form the largest multi-digit number. What is the largest multi-digit number for this?
"123456789101112…484950"，是一个多位数，从中划去80个数字，使剩下的数字(先后顺序不变)组成最大的多位数．这个最大的多位数是多少？
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