Let's roll up our sleeves and solve this. We have 622 and we're going to multiply it by 3, essentially adding 622 to itself 3 times.
Step 1: 0 + 622 = 622
Step 2: 622 + 622 = 1244
Step 3: 1244 + 622 = 1866

So, 622*3 = 1866