Worked on the ethereum/go-ethereum repository, focusing on improving the accuracy of cryptographic documentation within the Go codebase. Addressed a documentation discrepancy in the crypto/bn256 package by updating the comment for the MulXi operation to correctly state that it multiplies by 9, rather than the previously indicated (i+3). This change ensures that the documentation now accurately reflects the underlying code behavior, reducing potential confusion for developers working with cryptographic primitives. Utilized skills in Go and cryptography to identify and resolve the issue, demonstrating attention to detail and a commitment to maintaining clear, reliable technical documentation for future contributors.