Alright, let's solve this math problem step by step. First, we have the number 406. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 4. So, we're going to take the number 406 and add it to itself 4 times.
Step 1: 0 + 406 = 406
Step 2: 406 + 406 = 812
Step 3: 812 + 406 = 1218
Step 4: 1218 + 406 = 1624

So, 406*4 = 1624