using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static long[] NList => ReadLine().Split().Select(long.Parse).ToArray();
    public static void Main()
    {
        var a = NList;
        var mod = 1_000_000_007;
        var b = a[0] % mod;
        var c = a[1] % mod;
        var d = a[2] % mod;
        if (c == 1)
        {
            WriteLine(b * d % mod);
        }
        else
        {
            var x = b * c % mod * Exp(c - 1 + mod, mod - 2, mod) % mod;
            WriteLine((Exp(c, a[2], mod) * x % mod - x + mod) % mod);
        }
    }
    static long Exp(long n, long p, int mod)
    {
        long _n = n % mod;
        var _p = p;
        var result = 1L;
        if ((_p & 1) == 1) result *= _n;
        while (_p > 0)
        {
            _n = _n * _n % mod;
            _p >>= 1;
            if ((_p & 1) == 1) result = result * _n % mod;
        }
        return result;
    }
}