import java.io.*; import java.util.*; import java.util.stream.*; public class Main { static final int MOD = 1000000007; public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); int n = sc.nextInt(); int[] dp = new int[7]; while (n-- > 0) { int x = sc.nextInt() % 7; int length = sc.nextInt(); int target = getLength(x, length); int[] current = new int[7]; int base = pow(3, length); for (int i = 0; i < 7; i++) { current[(i * base + target) % 7] += dp[i]; current[(i * base + target) % 7] %= MOD; } for (int i = 0; i < 7; i++) { dp[i] += current[i]; dp[i] %= MOD; } dp[target]++; } long ans = 0; for (int i = 1; i < 7; i++) { ans += (long)dp[i] * i % MOD; ans %= MOD; } System.out.println(ans); } static int getLength(int x, int length) { if (length == 1) { return x; } else if (length % 2 == 0) { int tmp = getLength(x, length / 2); return (tmp * pow(3, length / 2) + tmp) % 7; } else { return (getLength(x, length - 1) * 10 + x) % 7; } } static int pow(int x, int p) { if (p == 0) { return 1; } else if (p % 2 == 0) { return pow(x * x % 7, p / 2); } else { return pow(x, p - 1) * x % 7; } } } class Utilities { static String arrayToLineString(Object[] arr) { return Arrays.stream(arr).map(x -> x.toString()).collect(Collectors.joining("\n")); } static String arrayToLineString(int[] arr) { return String.join("\n", Arrays.stream(arr).mapToObj(String::valueOf).toArray(String[]::new)); } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); StringBuilder sb = new StringBuilder(); public Scanner() throws Exception { } public int nextInt() throws Exception { return Integer.parseInt(next()); } public long nextLong() throws Exception { return Long.parseLong(next()); } public double nextDouble() throws Exception { return Double.parseDouble(next()); } public int[] nextIntArray() throws Exception { return Stream.of(br.readLine().split(" ")).mapToInt(Integer::parseInt).toArray(); } public String next() throws Exception { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }