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#include <bits/stdc++.h>

using namespace std;

#define sim template < class c
#define ris return * this
#define dor > debug & operator <<
#define eni(x) sim > typename \
enable_if<sizeof dud<c>(0) x 1, debug&>::type operator<<(c i) {
sim > struct rge { c b, e; };
sim > rge<c> range(c i, c j) { return {i, j}; }
sim > auto dud(c* x) -> decltype(cerr << *x, 0);
sim > char dud(...);
struct debug {
#ifdef LOCAL
~debug() { cerr << endl; }
eni(!=) cerr << boolalpha << i; ris; }
eni(==) ris << range(begin(i), end(i)); }
sim, class b dor(pair < b, c > d) {
  ris << "(" << d.first << ", " << d.second << ")";
}
sim dor(rge<c> d) {
  *this << "[";
  for (c it = d.b; it != d.e; ++it)
    *this << ", " + 2 * (it == d.b) << *it;
  ris << "]";
}
#else
sim dor(const c&) { ris; }
#endif
};
#define imie(x...) " [" #x ": " << (x) << "] "

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
template <typename A, typename B>
using unordered_map2 = __gnu_pbds::gp_hash_table<A, B>;
using namespace __gnu_pbds;
template <typename T> using ordered_set =
  __gnu_pbds::tree<T, __gnu_pbds::null_type, less<T>, __gnu_pbds::rb_tree_tag,
                   __gnu_pbds::tree_order_statistics_node_update>;
// ordered_set<int> s; s.insert(1); s.insert(2);
// s.order_of_key(1);    // Out: 0.
// *s.find_by_order(1);  // Out: 2.

using ld = long double;
using ll = long long;

constexpr int mod = 1000 * 1000 * 1000 + 7;
constexpr int odw2 = (mod + 1) / 2;

void OdejmijOd(int& a, int b) { a -= b; if (a < 0) a += mod; }
int Odejmij(int a, int b) { OdejmijOd(a, b); return a; }
void DodajDo(int& a, int b) { a += b; if (a >= mod) a -= mod; }
int Dodaj(int a, int b) { DodajDo(a, b); return a; }
int Mnoz(int a, int b) { return (ll) a * b % mod; }
void MnozDo(int& a, int b) { a = Mnoz(a, b); }
int Pot(int a, ll b) { int res = 1; while (b) { if (b % 2 == 1) MnozDo(res, a); a = Mnoz(a, a); b /= 2; } return res; }
int Odw(int a) { return Pot(a, mod - 2); }
void PodzielDo(int& a, int b) { MnozDo(a, Odw(b)); }
int Podziel(int a, int b) { return Mnoz(a, Odw(b)); }
int Moduluj(ll x) { x %= mod; if (x < 0) x += mod; return x; }

template <typename T> T Maxi(T& a, T b) { return a = max(a, b); }
template <typename T> T Mini(T& a, T b) { return a = min(a, b); }

class Problem {
 public:
  Problem(int n_, int k_, int m_)
    : n(n_)
    , k(k_)
    , m(m_)
    , odw_k(Odw(k_)) {}

  int Solve() {
    vector<int> dp(m);
    vector<int> above(m);
    vector<int> decrease(m);
    dp[0] = 1;
    above[0] = 1;

    int forward_val = 0;
    int above_forward_val = 0;
    for (int i = 0; i < m; i++) {
      OdejmijOd(above_forward_val, forward_val);
      OdejmijOd(forward_val, decrease[i]);
      DodajDo(dp[i], forward_val);
      DodajDo(above[i], above_forward_val);
      const int frac = Mnoz(dp[i], odw_k);
      const int upper_limit = min(k, m - i - 1);
      if (i + upper_limit + 1 < m) {
        DodajDo(decrease[i + upper_limit + 1], frac);
      }
      DodajDo(forward_val, frac);
      DodajDo(above_forward_val, Mnoz(upper_limit + 1, frac));
    }

    int result = 0;
    for (int i = 0; i < m; i++) {
      const int up = (i + 1 < m) ? above[i + 1] : 0;
      const int me = dp[i];
      const int down = above[i];

      int sum;
      if (up == down) {
        sum = Mnoz(n, Pot(up, n));
      } else {
        sum = Podziel(
          Odejmij(Pot(up, n), Pot(down, n)),
          Odejmij(up, down)
        );
      }

      DodajDo(result, Mnoz(sum, me));
    }
    return result;
  }

 private:
  int n, k, m;
  int odw_k;
};

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);

  int n, k, m;
  cin >> n >> k >> m;

  Problem problem(n, k, m);
  const int result = problem.Solve();

  cout << result << "\n";
  return 0;
}