#include<iostream>
using namespace std;
long b,c,d,M=1e9+7;
long pow(long a,long b){return b?pow(a%M*a%M,b/2)*(b%2?a%M:1)%M:1;}
main()
{
	cin>>b>>c>>d;
	long B=b%M,C=c%M,D=d%M;
	if(c>1)cout<<B*C%M*(pow(C,d)-1+M)%M*pow((C-1+M)%M,M-2)%M<<endl;
	else cout<<B*D%M<<endl;
}