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

template<class T>bool chmax(T &a, const T &b) { if (a<b) { a=b; return 1; } return 0; }
template<class T>bool chmin(T &a, const T &b) { if (b<a) { a=b; return 1; } return 0; }

#define FOR(i,a,b) for(ll i=(a);i<(b);++i)
#define ALL(v) (v).begin(), (v).end()
#define p(s) cout<<(s)<<endl
#define p2(s, t) cout << (s) << " " << (t) << endl
#define br() p("")
#define pn(s) cout << (#s) << " " << (s) << endl
#define p_yes() p("Yes")
#define p_no() p("No")

const ll mod = 1e9 + 7;
const ll inf = 1e18;

// a^b mod p
ll mod_pow(ll a, ll b){
    if(b==0) return 1;
 
    // 肩が奇数
    if(b%2==1){
        return a * mod_pow(a, b-1) % mod;
    }
    else{
        return mod_pow(a*a % mod, b/2) % mod;
    }
}

int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);

    // input
    ll B, C, D;
    cin >> B >> C >> D;

    B %= mod;
    C %= mod;
    D %= mod;

    if(C==1){
        p(D*B%mod);
        return 0;
    }

    ll a = mod_pow(C, D);
    if(a==0) a+=mod;
    a -= 1;
    a *= C;
    a %= mod;
    a *= B;
    a %= mod;

    // 割り算部分
    a *= mod_pow(C-1, mod-2);
    a %= mod;

    p(a);
    
    return 0;
}