Vaishnav and Factorials

//Bismillahir Rahmanir Rahim
/******Harun Or Rashid******/
/***********Template Starts Here***********/
#include<iostream>
#include<cstdio>
#include<cstring>
#include<cmath>
#include<cctype>
#include<cstdlib>
#include<cassert>
#include<string>
#include<vector>
#include<set>
#include<stack>
#include<queue>
#include<map>
#include<algorithm>
using namespace std;

#define MEM(a,b) memset(a,b,sizeof(a))
#define CLR(a) memset(a,0,sizeof(a))
#define MAX(a,b) ((a)>(b)?(a):(b))
#define MIN(a,b) ((a)>(b)?(b):(a))
#define ABS(a) ((a)>0? (a):(-(a)))
#define SQ(a) ((a)*(a))
#define SZ(a) (int)a.size()
#define FORN(i,n) for(i=1;i<=n;i++)
#define FORAB(i,a,b) for(i=a;i<=b;i++)
#define ALL(V) V.begin(),V.end()
#define pb(a) push_back(a)
#define pr(a) cout<<a<<endl
#define SQR(a) ((a)*(a))
#define pf printf
#define sf scanf
#define swap(a,b) (a ^= b, b ^= a, a ^= b)
#define PI acos(-1)
#define x first
#define y second
#define eps 1e-7

typedef int D;
typedef long long int LLD;
typedef unsigned long long int LLU;
typedef vector<D> VI;
typedef set<D> SI;
typedef vector<D>::iterator Viti;

/***********Template Ends Here***********/

int main()
{
    int t,n,i,j,k,l,carry,fact[999999],cnt;
    cin>>t;
    while(t--)
    {
        cin>>n;
        fact[0]=1;
        l=1;
        carry=0;
        for(i=1; i<=n; i++)
        {
            for(j=0; j<l; j++)
            {
                k=fact[j]*i+carry;
                fact[j]=k%10;
                carry=k/10;
            }
            while(carry)
            {
                fact[l]=carry%10;
                carry/=10;
                l++;
            }
        }
        cnt=0;
        for(i=l-1; i>=0; i--) if(fact[i]==4 ||fact[i]==7) cnt++;
        cout<<cnt<<endl;
    }
    return 0;
}