```\\nfunction tryMul(\\n    uint256 a,\\n    uint256 b\\n) internal pure returns (bool, uint256) {\\n    unchecked {\\n        // Gas optimization: this is cheaper than requiring 'a' not being zero, but the\\n        // benefit is lost if 'b' is also tested.\\n        // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522\\n        if (a == 0) return (true, 0);\\n        uint256 c = a * b;\\n        if (c / a != b) return (false, 0);\\n        return (true, c);\\n    }\\n}\\n```\\n