Let's get this math done. We have 605 and we're going to multiply it by 6. This is the same as taking 605 and adding it to itself 6 times.
Step 1: 0 + 605 = 605
Step 2: 605 + 605 = 1210
Step 3: 1210 + 605 = 1815
Step 4: 1815 + 605 = 2420
Step 5: 2420 + 605 = 3025
Step 6: 3025 + 605 = 3630

So, 605*6 = 3630