using System;

class Program
{
    static void Main(string[] args)
    {
        long A;
        long B;
        long product;
        string str = Console.ReadLine();
        bool resultA = long.TryParse(str.Split(' ')[0], out A);
        bool resultB = long.TryParse(str.Split(' ')[1], out B);
        if (resultA && resultB) {
            product = ( A * B ) % 1000000007;
            Console.WriteLine(product);
        }
        else {
            Console.WriteLine("long型の数字入れてや");
        }
    }
}