OK, let's crack this. We're given 77 and our task is to multiply it by 5. Essentially, we'll be adding 77 to itself 5 times.
Step 1: 0 + 77 = 77
Step 2: 77 + 77 = 154
Step 3: 154 + 77 = 231
Step 4: 231 + 77 = 308
Step 5: 308 + 77 = 385

So, 77*5 = 385