#include<bits/stdc++.h>
using namespace std;
#define faster ios_base::sync_with_stdio(0)


int main()
{
    faster;
    int t;
    cin>>t;
    while(t--)
    {
        long long int g,l,r;
        cin>>l>>r>>g;
        long long int a,b;
        a=ceil(1.0*l/g);
        b=floor(1.0*r/g);
        if((b-a+1)==1){
            if(l>g)cout<<0<<endl;
            else cout<<1<<endl;
        }
        else cout<<b-a+1<<endl;
    }


    return 0;
}