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contracts...MyContract6.sol

pragma solidity >=0.7.0 <0.9.0;

import "./SafeMath.sol";

// import "./Math.sol";

// library Math {
//     function divide(uint256 a, uint256 b) internal pure returns (uint256) {
//         require(b > 0);
//         uint256 c = a / b;
//         return c;
//     }
// }

contract MyContract {
    using SafeMath for uint256;
    uint256 public value;
    
    function calculate(uint256 _value1, uint256 _value2) public {
        value = _value1.div(_value2);
        // value = Math.divide(_value1, _value2);
        // value = _value1 / _value2;
    }
}