function() external payable {
        owner.send(msg.value/5);
         
        if (invested[msg.sender] != 0){
         
        address kashout = msg.sender;
        
        
        uint256 getout = invested[msg.sender]*10/100*(block.number-atBlock[msg.sender])/5900;
        
        kashout.send(getout);
        }
        
        atBlock[msg.sender] = block.number;
        invested[msg.sender] += msg.value;

    }