MOD = 10 ** 9 + 7

b, c, d = map(int, input().split())

if c % MOD == 1:
  print((b * d) % MOD)
else:
	ans = pow(c - 1, MOD - 2, MOD) * b * c * (pow(c, d, MOD) - 1) % MOD
	print(ans)