OK, let's work through this together. We're starting with 216 and we're going to multiply it by 6, which means we add 216 to itself 6 times.
Step 1: 0 + 216 = 216
Step 2: 216 + 216 = 432
Step 3: 432 + 216 = 648
Step 4: 648 + 216 = 864
Step 5: 864 + 216 = 1080
Step 6: 1080 + 216 = 1296

So, 216*6 = 1296