OK, let's crack this. We're given 572 and our task is to multiply it by 42. Essentially, we'll be adding 572 to itself 42 times.
Step 1: 0 + 572 = 572
Step 2: 572 + 572 = 1144
Step 3: 1144 + 572 = 1716
Step 4: 1716 + 572 = 2288
Step 5: 2288 + 572 = 2860
Step 6: 2860 + 572 = 3432
Step 7: 3432 + 572 = 4004
Step 8: 4004 + 572 = 4576
Step 9: 4576 + 572 = 5148
Step 10: 5148 + 572 = 5720
Step 11: 5720 + 572 = 6292
Step 12: 6292 + 572 = 6864
Step 13: 6864 + 572 = 7436
Step 14: 7436 + 572 = 8008
Step 15: 8008 + 572 = 8580
Step 16: 8580 + 572 = 9152
Step 17: 9152 + 572 = 9724
Step 18: 9724 + 572 = 10296
Step 19: 10296 + 572 = 10868
Step 20: 10868 + 572 = 11440
Step 21: 11440 + 572 = 12012
Step 22: 12012 + 572 = 12584
Step 23: 12584 + 572 = 13156
Step 24: 13156 + 572 = 13728
Step 25: 13728 + 572 = 14300
Step 26: 14300 + 572 = 14872
Step 27: 14872 + 572 = 15444
Step 28: 15444 + 572 = 16016
Step 29: 16016 + 572 = 16588
Step 30: 16588 + 572 = 17160
Step 31: 17160 + 572 = 17732
Step 32: 17732 + 572 = 18304
Step 33: 18304 + 572 = 18876
Step 34: 18876 + 572 = 19448
Step 35: 19448 + 572 = 20020
Step 36: 20020 + 572 = 20592
Step 37: 20592 + 572 = 21164
Step 38: 21164 + 572 = 21736
Step 39: 21736 + 572 = 22308
Step 40: 22308 + 572 = 22880
Step 41: 22880 + 572 = 23452
Step 42: 23452 + 572 = 24024

So, 572*42 = 24024