How to download and setup Calculator_Qt
Open terminal and run command
                                            git clone https://github.com/QiTianyu-0403/Calculator_Qt.git
                                        
                                        git clone is used to create a copy or clone of Calculator_Qt repositories.
                                        You pass git clone a repository URL. it supports a few different network protocols and corresponding URL formats.
Also you may download zip file with Calculator_Qt https://github.com/QiTianyu-0403/Calculator_Qt/archive/master.zip
Or simply clone Calculator_Qt with SSH
                                            [email protected]:QiTianyu-0403/Calculator_Qt.git                                    
                                    If you have some problems with Calculator_Qt
You may open issue on Calculator_Qt support forum (system) here: https://github.com/QiTianyu-0403/Calculator_Qt/issuesSimilar to Calculator_Qt repositories
Here you may see Calculator_Qt alternatives and analogs
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