#include<bits/stdc++.h>
using namespace std;
#define ll long long
const int mod=1e9+7;
ll solve(ll x){
	ll ans=1;
	while(x){
		ans*=x%10;
		ans%=mod;
		x/=10;
	}
	return ans;
}
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	int t;cin>>t;
	while(t--) {
		ll l,r;cin>>l>>r;
		if(r-l+1>=10) {
			cout<<"0\n";
		}
		else {
			ll ans=1;
			for(int i=l;i<=r;i++){
				ans*=solve(i);
				ans%=mod;
			}
			cout<<ans<<"\n";
		}
	}
}