#include <iostream>
#include <math.h>
using namespace std;
int ileprob;
 
int main()
{
    cin>>ileprob;
    for(int i=0; i<ileprob; i++)
    {
    int zap, cias;
    cin>>zap>>cias;
    float suma=0;
    for(int i=0; i<zap; i++)
    {
        float x=0, y;
        cin>>y;
        x=(86400/y)/cias;
        if(x<1)
        {
            x=0;
        }
        else{x=ceil(x);}
        suma=suma+x;
    }
    cout<<suma<<endl;
    }
return(0);
}
 
 

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MgoyIDEwCjM2MDAKMTgwMAozIDM1NgoxMjMKMzI5OTkKMTAxMDE=

2
2 10
3600
1800
3 356
123
32999
10101