Let's get this math done. We have 856 and we're going to multiply it by 5. This is the same as taking 856 and adding 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