#include <bits/stdc++.h>
#define IOS ios::sync_with_stdio(false);cin.tie(0); 
using namespace std;
#define int long long
const int mod = 1e9 + 7;
int f(int a)
{
    int sum = 1;
    while (a / 10)
    {
        int tem = a % 10;
        sum *= tem;
        a /= 10;

    }
    int tem = a % 10;
    sum *= tem;
    a /= 10;
    return sum;
}
signed main() {
    IOS;
    int t;
    cin >> t;
    while (t--)
    {
        int l, r;
        bool flag=true;
        cin >> l >> r;
        if(r-l>=10)
        {
        	flag=false;
        	cout<<0<<endl;
        	continue;
		}
        int ans = 1;
        for (int i = l; i <= r; i++)
        {
            ans *= f(i);
            ans %= mod;
        }
		if(flag)cout << ans << endl;
    }
    
    
    
}