#include <iostream>
using namespace std;

const int MOD = 1000000007;

struct mint
{
    int val;

    mint() : val(0) {}

    mint(long long v)
    {
        if (abs(v) >= MOD)
        {
            v %= MOD;
        }
        if (v < 0)
        {
            v += MOD;
        }
        val = v;
    }

    mint &operator++()
    {
        val++;
        if (val == MOD)
        {
            val = 0;
        }
        return *this;
    }

    mint &operator--()
    {
        if (val == 0)
        {
            val = MOD;
        }
        val--;
        return *this;
    }

    mint &operator+=(const mint &x)
    {
        val += x.val;
        if (val >= MOD)
        {
            val -= MOD;
        }
        return *this;
    }

    mint &operator-=(const mint &x)
    {
        val -= x.val;
        if (val < 0)
        {
            val += MOD;
        }
        return *this;
    }

    mint &operator*=(const mint &x)
    {
        val = (int)((long long)val * x.val % MOD);
        return *this;
    }

    mint &operator/=(const mint &x)
    {
        *this *= x.inv();
        return *this;
    }

    mint operator-()
    {
        return mint() - *this;
    }

    mint pow(long long n) const
    {
        mint x = 1, r = *this;
        while (n)
        {
            if (n & 1)
            {
                x *= r;
            }
            r *= r;
            n >>= 1;
        }
        return x;
    }

    mint inv() const
    {
        return pow(MOD - 2);
    }

    friend mint operator+(const mint &x, const mint &y)
    {
        return mint(x) += y;
    }

    friend mint operator-(const mint &x, const mint &y)
    {
        return mint(x) -= y;
    }

    friend mint operator*(const mint &x, const mint &y)
    {
        return mint(x) *= y;
    }

    friend mint operator/(const mint &x, const mint &y)
    {
        return mint(x) /= y;
    }

    friend bool operator==(const mint &x, const mint &y)
    {
        return x.val == y.val;
    }

    friend bool operator!=(const mint &x, const mint &y)
    {
        return x.val != y.val;
    }

    friend std::ostream &operator<<(std::ostream &os, const mint &x)
    {
        return os << x.val;
    }

    friend std::istream &operator>>(std::istream &is, mint &x)
    {
        long long v;
        is >> v;
        x = mint(v);
        return is;
    }
};

int main()
{
    int k;
    cin >> k;
    int d[200005], l[200005];
    for (int i = 0; i < k; i++)
    {
        cin >> d[i] >> l[i];
    }
    int p[6];
    p[0] = 1;
    for (int i = 1; i < 6; i++)
    {
        p[i] = p[i - 1] * 10 % 7;
    }
    mint e[7] = {1};
    for (int i = 0; i < k; i++)
    {
        int x = (p[l[i] % 6] + 6) * 4 * d[i] % 7;
        mint f[7]{0};
        for (int j = 0; j < 7; j++)
        {
            f[j] += e[j];
            f[(j * p[l[i] % 6] + x) % 7] += e[j];
        }
        swap(e, f);
    }
    mint ans = 0;
    for (int j = 0; j < 7; j++)
    {
        ans += e[j] * j;
    }
    cout << ans << endl;
}