// SPDX-License-Identifier: MIT pragma solidity >=0.6.11; import "./MysteryMath.sol"; contract MysteryMathV2 is MysteryMath { uint32 public immutable version; constructor() { version = 2; } function doMath(uint256 a, uint256 b) external pure override returns (uint256 _result) { _result = a * b; } }