MOD = 10**9 + 7

B, C, D = map(int, input().split())

B_mod = B % MOD

if C == 1:
    sum_mod = D % MOD
else:
    C_mod = C % MOD
    if C_mod == 1:
        sum_mod = D % MOD
    else:
        # Compute numerator = (C^D - 1) mod MOD
        numerator = (pow(C_mod, D, MOD) - 1) % MOD
        # Compute denominator = (C - 1) mod MOD
        denominator = (C_mod - 1) % MOD
        # Compute inverse of denominator modulo MOD
        inv_denominator = pow(denominator, MOD-2, MOD)
        sum_mod = (numerator * inv_denominator) % MOD

# Calculate the total: (B * C * sum) mod MOD
C_mod_total = C % MOD
total = (B_mod * C_mod_total) % MOD
total = (total * sum_mod) % MOD

print(total)