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#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b) for (int i = (a); i < (b); i++)
#define all(x) begin(x), end(x)
#define sz(x) int((x).size())
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;

#ifdef LOCAL
auto operator<<(auto& o, auto x) -> decltype(x.first, o);
auto operator<<(auto& o, auto x) -> decltype(x.end(), o) {
  o << "{";
  for (int i = 0; auto y : x) o << ", " + !i++ * 2 << y;
  return o << "}"; }
auto operator<<(auto& o, auto x) -> decltype(x.first, o) {
  return o << "(" << x.first << ", " << x.second << ")"; }
void __print(auto... x) { ((cerr << x << " "), ...) << endl; }
#define debug(x...) __print("[" #x "]:", x)
#else
#define debug(...) 2137
#endif

template<int M, int R>
struct Mod {
  static const int mod = M, rt = R;
  int x;
  Mod(ll y = 0) : x(y % M) { x += (x < 0) * M; }
  Mod& operator+=(Mod o) {
    if ((x += o.x) >= M) x -= M;
    return *this; }
  Mod& operator-=(Mod o) {
    if ((x -= o.x) < 0) x += M;
    return *this; }
  Mod& operator*=(Mod o) {
    x = 1ll * x * o.x % M;
    return *this; }
  Mod& operator/=(Mod o) { return *this *= o.inv(); }
  friend Mod operator+(Mod a, Mod b) { return a += b; }
  friend Mod operator-(Mod a, Mod b) { return a -= b; }
  friend Mod operator*(Mod a, Mod b) { return a *= b; }
  friend Mod operator/(Mod a, Mod b) { return a /= b; }
  auto operator<=>(const Mod&) const = default;
  Mod pow(ll n) const {
    Mod a = x, b = 1;
    for (; n; n /= 2, a *= a) if (n % 2) b *= a;
    return b; }
  Mod inv() const { assert(x); return pow(M - 2); }
  friend ostream& operator<<(ostream& os, Mod x) {
    return os << x.x; }
};

const int mod = 1e9 + 7;
using mint = Mod<mod, -1>;

const int nax = 5e5 + 100;
int a[nax], b[nax];
ll pre[nax], c[nax];
mint prod[nax], add[nax];
ll t[4 * nax];

void build(int v, int tl, int tr) {
  if(tl + 1 == tr) {
    t[v] = pre[tl - 1] - c[tl];
    return;
  }
  int tm = (tl + tr) >> 1;
  build(2 * v, tl, tm);
  build(2 * v + 1, tm, tr);
  t[v] = max(t[2 * v], t[2 * v + 1]);
}

int get_first(int v, int tl, int tr, int l, ll x) {
  if(tl + 1 == tr) {
    if(t[v] >= x) return tl;
    return nax;
  }
  int tm = (tl + tr) >> 1;
  if(l >= tm || t[2 * v] < x) return get_first(2 * v + 1, tm, tr, l, x);
  int i = get_first(2 * v, tl, tm, l, x);
  if(i != nax) return i;
  if(t[2 * v + 1] < x) return nax;
  return get_first(2 * v + 1, tm, tr, l, x);
}

int main() {
  cin.tie(0)->sync_with_stdio(0);
  
  int n, q;
  cin >> n >> q;
  prod[0] = 1;
  add[0] = 0;
  for(int i = 1; i <= n; i++) {
    cin >> a[i] >> b[i];
    pre[i] = pre[i - 1] + a[i];
    prod[i] = prod[i - 1] * b[i];
    if(b[i] == 1) {
      c[i] = 1e18;
      add[i] = add[i - 1] + a[i];
    } else {
      c[i] = (a[i] + b[i] - 2) / (b[i] - 1);
      add[i] = add[i - 1] * b[i];
    }
  }
  
  build(1, 1, n + 1);
  
  while(q--) {
    ll x;
    int l, r;
    cin >> x >> l >> r;
    l++;
    
    while(l <= r && x < mod) {
      int j = get_first(1, 1, n + 1, l, pre[l - 1] - x);
      
      if(j > r) {
        x += pre[r] - pre[l - 1];
        l = r + 1;
      } else {
        x += pre[j - 1] - pre[l - 1];
        l = j;
        if(x < mod) {
          x *= b[l];
          l++;
        }
      }
    }
    
    mint ans = x;
    ans = (ans - add[l - 1]) * prod[r] / prod[l - 1] + add[r];
    cout << ans.x << endl;
  }
}