OK, let's crack this. We're given 537 and our task is to multiply it by 6. Essentially, we'll be adding 537 to itself 6 times.
Step 1: 0 + 537 = 537
Step 2: 537 + 537 = 1074
Step 3: 1074 + 537 = 1611
Step 4: 1611 + 537 = 2148
Step 5: 2148 + 537 = 2685
Step 6: 2685 + 537 = 3222

So, 537*6 = 3222