for(int a0 = 0; a0 < t; a0++){
        int n;
        int c;
        int m;
        int num=0;
        cin >> n >> c >> m;
        int wrapper=0;
        num=n/c;
        wrapper=num;
        while(wrapper>=m)
        {
            num=num+(wrapper/m);
            wrapper=(wrapper/m)+(wrapper%m);
        }
        cout<<num<<endl;
}