Unfortunately, recovering the full private key with just the first 9 symbols is highly unlikely. Since the amount is not negligible, It would be a good idea to look for a paper and document restoration or forensic laboratory in your local area that specializes in handling situations like this. They might have the expertise and tools to assist with reading the other characters from the damaged paper. Reading other characters from paper might be easier than attempting to brute force the missing characters of the private key. Good luck!