Let's get this math done. We have 168 and we're going to multiply it by 6. This is the same as taking 168 and adding it to itself 6 times.
Step 1: 0 + 168 = 168
Step 2: 168 + 168 = 336
Step 3: 336 + 168 = 504
Step 4: 504 + 168 = 672
Step 5: 672 + 168 = 840
Step 6: 840 + 168 = 1008

So, 168*6 = 1008