#include <iostream>
#include <cstdio>
#include <iomanip>
#include <vector>
#include <map>
#include <set>
#include <queue>
#include <bitset>
#include <stack>
#include <utility>
#include <numeric>
#include <algorithm>
#include <functional>
#include <cctype>
#include <complex>
#include <string>
#include <sstream>
#include <fstream>
#include <cassert>
using namespace std;

//common
typedef int  i32;
typedef long long i64,ll;
typedef vector<int> vi; typedef pair<int,int> pii; typedef vector<pair<int,int> > vpii;
typedef long long ll; typedef vector<long long> vl; typedef pair<long long,long long> pll; typedef vector<pair<long long,long long> > vpll;
typedef vector<string> vs; typedef long double ld;

#define BR "\n"
#define ALL(c) (c).begin(),(c).end()
#define REP(i,n) for(int i=0;i<(int)(n);++i)
#define EACH(it,o) for(auto it = (o).begin(); it != (o).end(); ++it)
#define IN(l,v,r) ((l)<=(v) && (v)<(r))

//config
//#undef NDEBUG
//#define INF 1<<30
//#define EPS 1e-8
//const ll MOD =100000007;

//debug
#ifdef NDEBUG
#define DUMP(x)
#define DUMPLN(x)
#define DEBUG(x)
#define DEBUGLN(x)
#define LINE()
#define LINELN()
#define CHECK(exp,act)
#define STOP(e)
#else
#define DUMP(x)  cerr << #x << " = " << (x)
#define DUMPLN(x)  DUMP(x) <<endl
#define DEBUG(x) DUMP(x) << LINE() << " " << __FILE__
#define DEBUGLN(x) DEBUG(x)<<endl
#define LINE()    cerr<< " (L" << __LINE__ << ")"
#define LINELN()    LINE()<<endl
#define CHECK(exp,act)  if(exp!=act){DUMPLN(exp);DEBUGLN(act);}
#define STOP(e)  CHECK(e,true);if(!(e)) exit(1);
#endif

template<class T> inline string toString(const vector<T>& x) {
	stringstream ss;
	REP(i,x.size()){
		if(i!=0)ss<<" ";
		ss<< x[i];
	}
	return ss.str();
}

template<class T> inline string toString(const vector<vector<T> >& map) {
	stringstream ss;
	REP(i,map.size()){
		if(i!=0)ss<<BR;
		ss<< toString(map[i]);
	}
	return ss.str();
}
template<class K,class V>  string toString(map<K,V>& x) {
	string res;stringstream ss;
	for(auto& p:x)ss<< p.first<<":" << p.second<<" ";
	return ss.str();
}

string BITtoString(int bit){
    stringstream ss;
    while(bit!=0){ss<<(bit%2);bit/=2;}
    string res=ss.str();reverse(ALL(res));
    return res;
}

template<typename T,typename V> inline T pmod(T v,V MOD){
	return (v%MOD+MOD)%MOD;
}

#define nextInt(n) scanf("%d",&n)
#define nextLong(n) scanf("%lld",&n)
#define nextDouble(n) scanf("%lf",&n)

ll MOD=1000000007;
class Main{
public:

	string A,B,C;
	bool input(){
		cin >> A;if(A=="0")return false;
		cin >> B >> C;
		return true;
	}

	int solve(){
		int sz=A.size();
		vector<vector<ll>> dp(sz+1,vector<ll>(2));
		dp[sz][0]=1;

		for(int i=sz-1;i>=0;i--){
			REP(up,2)for(int a=0;a<=9;a++)for(int b=0;b<=9;b++)for(int c=0;c<=9;c++){
				if(a+'0'!=A[i] && A[i]!='?')continue;
				if(b+'0'!=B[i] && B[i]!='?')continue;
				if(c+'0'!=C[i] && C[i]!='?')continue;
				if(i==0)if(a==0 || b==0 || c==0)continue;

				REP(pup,2)if(a+b+pup==c+10*up)
					dp[i][up]=pmod(dp[i][up]+dp[i+1][pup],MOD);
			}
		}
		return dp[0][0];
	}

	void run(){
		while(true){
			if(!input())break;
			cout << solve()<<endl;
		}
	}
};

 int main(){
	//ios::sync_with_stdio(false);
 	Main().run();
 	return 0;
 }

Measured memory_bytes: 1216