Let's roll up our sleeves and solve this. We have 77 and we're going to multiply it by 5, essentially 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