//Lib
#include<cstdio>
#include<cstring>
#include<cstdlib>
#include<cmath>
#include<ctime>
 
#include<iostream>
#include<algorithm>
#include<vector>
#include<string>
#include<queue>
#include<set>
#include<map>
using namespace std;
//Macro
#define rep(i,a,b)  for(int i=a,tt=b;i<=tt;++i)
#define drep(i,a,b) for(int i=a,tt=b;i>=tt;--i)
#define erep(i,e,x) for(int i=x;i;i=e[i].next)
#define irep(i,x)   for(__typeof(x.begin()) i=x.begin();i!=x.end();i++)
#define read()  (strtol(ipos,&ipos,10))
#define sqr(x)  ((x)*(x))
#define pb  push_back
#define PS  system("pause");
typedef long long   ll;
typedef pair<int,int> pii;
const int oo=~0U>>1;
const double inf=1e100;
const double eps=1e-6;
string name="num", in=".in", out=".out";
//Var
ll s[22688],a1,a2,n,m,T;
int D(int i){return (i-1)%9+1;}
void Calc()
{
    rep(i,1,22680)
        if(D(i)*i<=22680)
            s[D(i)*i]=1;
}
void Pre()
{
    Calc();
    rep(i,1,22680)
        s[i]+=s[i-1];
}
void Work()
{
    scanf("%d",&T);
    rep(i,1,T)
    {
        cin>>n>>m;n--;
        if(n!=-1)
        {
            a1=n/22680*s[22680];
            a1+=s[n%22680];
        }
        else a1=0;
        a2=m/22680*s[22680];
        a2+=s[m%22680];
        cout<<a2-a1<<endl;
    }
}
int main()
{
//  freopen((name+in).c_str(),"r",stdin);
//  freopen((name+out).c_str(),"w",stdout);
//  Init();
    Pre();
    Work();
    return 0;
}