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    include

    include

    include

    include

    include

    include

    include

    int main() { int t,i; scanf("%d",&t); for(i=1;i<=t;i++) { int n,c,m,ans,x,sum=0; scanf("%d %d %d",&n,&c,&m); ans=n/c; x=ans; while(x>=m) { sum=sum+(x/m); x=(x/m)+(x%m);

        }
        printf("%d\n",ans+sum);
    
    }
    
    return 0;
    

    }