OK, let's work through this together. We're starting with 571 and we're going to multiply it by 23, which means we add 571 to itself 23 times.
Step 1: 0 + 571 = 571
Step 2: 571 + 571 = 1142
Step 3: 1142 + 571 = 1713
Step 4: 1713 + 571 = 2284
Step 5: 2284 + 571 = 2855
Step 6: 2855 + 571 = 3426
Step 7: 3426 + 571 = 3997
Step 8: 3997 + 571 = 4568
Step 9: 4568 + 571 = 5139
Step 10: 5139 + 571 = 5710
Step 11: 5710 + 571 = 6281
Step 12: 6281 + 571 = 6852
Step 13: 6852 + 571 = 7423
Step 14: 7423 + 571 = 7994
Step 15: 7994 + 571 = 8565
Step 16: 8565 + 571 = 9136
Step 17: 9136 + 571 = 9707
Step 18: 9707 + 571 = 10278
Step 19: 10278 + 571 = 10849
Step 20: 10849 + 571 = 11420
Step 21: 11420 + 571 = 11991
Step 22: 11991 + 571 = 12562
Step 23: 12562 + 571 = 13133

So, 571*23 = 13133