Alright, let's solve this math problem step by step. First, we have the number 856. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 5. So, we're going to take the number 856 and add it to itself 5 times.
Step 1: 0 + 856 = 856
Step 2: 856 + 856 = 1712
Step 3: 1712 + 856 = 2568
Step 4: 2568 + 856 = 3424
Step 5: 3424 + 856 = 4280

So, 856*5 = 4280