Alright, let's solve this math problem step by step. First, we have the number 771. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 2. So, we're going to take the number 771 and add it to itself 2 times.
Step 1: 0 + 771 = 771
Step 2: 771 + 771 = 1542

So, 771*2 = 1542