#!/usr/bin/env PyPy3

from collections import Counter, defaultdict, deque
import itertools
import re
import math
from functools import reduce
import operator
import bisect
from heapq import *
import functools
mod=10 ** 9 + 7

import sys
input=sys.stdin.readline

k = int(input())
li = [0,1,4,6,5,2]
dp = [[0] * 7 for _ in range(k+1)]
ans = 0
for i in range(k):
    d,l = map(int,input().split())
    p10 = pow(10,l,7)
    xx = li[l % 6] * d % 7
    dp[i+1][xx] += 1
    for j in range(7):
        dp[i+1][(j * p10 + xx) % 7] += dp[i][j]
        dp[i+1][(j * p10 + xx) % 7] %= mod
    for j in range(7):
        ans += dp[i+1][j] * j % mod
        dp[i+1][j] += dp[i][j]

print(ans)