#include<iostream>
#include<atcoder/modint>
using namespace std;
using mint=atcoder::modint1000000007;
#include<array>
template<typename T,unsigned int N>
struct Matrix{
	array<array<T,N>,N>dat;
	array<T,N>&operator[](int i){return dat[i];}
	const array<T,N>&operator[](int i)const{return dat[i];}
	static Matrix eye(){
		Matrix res;
		for(int i=0;i<N;i++)res[i][i]=1;
		return res;
	}
	Matrix operator+(const Matrix&A)const{
		Matrix res;
		for(int i=0;i<N;i++)for(int j=0;j<N;j++)
			res[i][j]=dat[i][j]+A[i][j];
		return res;
	}
	Matrix operator*(const Matrix&A)const{
		Matrix res;
		for(int i=0;i<N;i++)for(int k=0;k<N;k++)for(int j=0;j<N;j++)
			res[i][j]+=dat[i][k]*A[k][j];
		return res;
	}
	Matrix pow(long long n)const{
		Matrix a=*this,res=eye();
		for(;n;a=a*a,n>>=1)if(n&1)res=res*a;
		return res;
	}
};
using mat=Matrix<mint,4>;
main()
{
	int C,N,M;
	cin>>C>>N>>M;
	const mint inv=mint(1)/C;
	mat A;
	for(int i=2;i<4;i++)A[i-2][i]=1;
	A[0][0]=inv;
	A[3][0]=(C-1)*inv;
	A[1][1]=inv;
	A[2][1]=inv;
	A[3][1]=(C-2)*inv;
	A=A.pow(N);
	cout<<(1-(1-A[0][0]).pow(M)).val()<<endl;
}