**self-descriptive number** is an integer \(m\) in which each digit \(d\) at position \(n\) (the most significant digit being at position \(0\) and the least significant at position \(9\)) counts how many instances of digit \(n\) are in \(m\). The smallest self-descriptive number is \(1210\), as it has 1 zero, 2 ones, 1 two and 0 threes. Find the largest self-descriptive number.

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