Let's roll up our sleeves and solve this. We have 524 and we're going to multiply it by 42, essentially adding 524 to itself 42 times.
Step 1: 0 + 524 = 524
Step 2: 524 + 524 = 1048
Step 3: 1048 + 524 = 1572
Step 4: 1572 + 524 = 2096
Step 5: 2096 + 524 = 2620
Step 6: 2620 + 524 = 3144
Step 7: 3144 + 524 = 3668
Step 8: 3668 + 524 = 4192
Step 9: 4192 + 524 = 4716
Step 10: 4716 + 524 = 5240
Step 11: 5240 + 524 = 5764
Step 12: 5764 + 524 = 6288
Step 13: 6288 + 524 = 6812
Step 14: 6812 + 524 = 7336
Step 15: 7336 + 524 = 7860
Step 16: 7860 + 524 = 8384
Step 17: 8384 + 524 = 8908
Step 18: 8908 + 524 = 9432
Step 19: 9432 + 524 = 9956
Step 20: 9956 + 524 = 10480
Step 21: 10480 + 524 = 11004
Step 22: 11004 + 524 = 11528
Step 23: 11528 + 524 = 12052
Step 24: 12052 + 524 = 12576
Step 25: 12576 + 524 = 13100
Step 26: 13100 + 524 = 13624
Step 27: 13624 + 524 = 14148
Step 28: 14148 + 524 = 14672
Step 29: 14672 + 524 = 15196
Step 30: 15196 + 524 = 15720
Step 31: 15720 + 524 = 16244
Step 32: 16244 + 524 = 16768
Step 33: 16768 + 524 = 17292
Step 34: 17292 + 524 = 17816
Step 35: 17816 + 524 = 18340
Step 36: 18340 + 524 = 18864
Step 37: 18864 + 524 = 19388
Step 38: 19388 + 524 = 19912
Step 39: 19912 + 524 = 20436
Step 40: 20436 + 524 = 20960
Step 41: 20960 + 524 = 21484
Step 42: 21484 + 524 = 22008

So, 524*42 = 22008