//
//
//  Codeforces: ganariya
//  AtCoder: ganariya2525
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//include
//------------------------------------------
#include <vector>
#include <list>
#include <map>
#include <unordered_map>
#include <climits>
#include <set>
#include <unordered_set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <queue>
#include <random>
#include <complex>
#include <regex>
#include <locale>
#include <random>
#include <type_traits>

using namespace std;

#define SHOW_VECTOR(v) {std::cerr << #v << "\t:";for(const auto& xxx : v){std::cerr << xxx << " ";}std::cerr << "\n";}
#define SHOW_MAP(v){std::cerr << #v << endl; for(const auto& xxx: v){std::cerr << xxx.first << " " << xxx.second << "\n";}}

using LL = long long;

//~~~~~~~~~~~~~~~~~~~~~_(＾～＾ ｣ ∠)_~~~~~~~~~~~~~~~~~~~~~

constexpr LL mod = 1e9 + 7;

int dx[] = {0, 1};
int dy[] = {1, 0};

int main() {

    int H, W;
    cin >> H >> W;

    vector<string> S(H);
    for (int i = 0; i < H; i++) cin >> S[i];

    vector<vector<LL>> I(H, vector<LL>(W, 0));
    I[0][0] = 1;

    for (int i = 0; i < H; i++) {
        for (int j = 0; j < W; j++) {
            for (int k = 0; k < 2; k++) {
                int toY = i + dy[k];
                int toX = j + dx[k];
                if (toY < 0 || toY >= H || toX < 0 || toX >= W) continue;
                if (S[toY][toX] == '#') continue;
                I[toY][toX] += I[i][j];
                I[toY][toX] %= mod;
            }
        }
    }

    cout << I[H - 1][W - 1];
}






































Measured memory_bytes: 9216