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[] counts = new int[7]; for (int i = 0; i < n; i++) { int d = sc.nextInt(); int length = sc.nextInt(); int p = pow7(3, length); int v = order7(d, length); int[] next = new int[7]; for (int j = 0; j < 7; j++) { next[(j * p + v) % 7] += counts[j]; next[(j * p + v) % 7] %= MOD; } next[v]++; for (int j = 0; j < 7; j++) { counts[j] += next[j]; counts[j] %= MOD; } } long ans = 0; for (int i = 1; i < 7; i++) { ans += counts[i] * (long)i % MOD; ans %= MOD; } System.out.println(ans); } static int order7(int x, int length) { if (length == 1) { return x; } else if (length % 2 == 0) { int v = order7(x, length / 2); return (v * pow7(3, length / 2) + v) % 7; } else { return (order7(x, length - 1) * 10 + x) % 7; } } static int pow7(int x, int p) { if (p == 0) { return 1; } else if (p % 2 == 0) { return pow7(x * x % 7, p / 2); } else { return pow7(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(); } }