OK, let's crack this. We're given 573 and our task is to multiply it by 11. Essentially, we'll be adding 573 to itself 11 times.
Step 1: 0 + 573 = 573
Step 2: 573 + 573 = 1146
Step 3: 1146 + 573 = 1719
Step 4: 1719 + 573 = 2292
Step 5: 2292 + 573 = 2865
Step 6: 2865 + 573 = 3438
Step 7: 3438 + 573 = 4011
Step 8: 4011 + 573 = 4584
Step 9: 4584 + 573 = 5157
Step 10: 5157 + 573 = 5730
Step 11: 5730 + 573 = 6303

So, 573*11 = 6303