Sure thing! We've got 442 and we're gonna multiply it by 42. That's the same as adding 442 to itself 42 times.
Step 1: 0 + 442 = 442
Step 2: 442 + 442 = 884
Step 3: 884 + 442 = 1326
Step 4: 1326 + 442 = 1768
Step 5: 1768 + 442 = 2210
Step 6: 2210 + 442 = 2652
Step 7: 2652 + 442 = 3094
Step 8: 3094 + 442 = 3536
Step 9: 3536 + 442 = 3978
Step 10: 3978 + 442 = 4420
Step 11: 4420 + 442 = 4862
Step 12: 4862 + 442 = 5304
Step 13: 5304 + 442 = 5746
Step 14: 5746 + 442 = 6188
Step 15: 6188 + 442 = 6630
Step 16: 6630 + 442 = 7072
Step 17: 7072 + 442 = 7514
Step 18: 7514 + 442 = 7956
Step 19: 7956 + 442 = 8398
Step 20: 8398 + 442 = 8840
Step 21: 8840 + 442 = 9282
Step 22: 9282 + 442 = 9724
Step 23: 9724 + 442 = 10166
Step 24: 10166 + 442 = 10608
Step 25: 10608 + 442 = 11050
Step 26: 11050 + 442 = 11492
Step 27: 11492 + 442 = 11934
Step 28: 11934 + 442 = 12376
Step 29: 12376 + 442 = 12818
Step 30: 12818 + 442 = 13260
Step 31: 13260 + 442 = 13702
Step 32: 13702 + 442 = 14144
Step 33: 14144 + 442 = 14586
Step 34: 14586 + 442 = 15028
Step 35: 15028 + 442 = 15470
Step 36: 15470 + 442 = 15912
Step 37: 15912 + 442 = 16354
Step 38: 16354 + 442 = 16796
Step 39: 16796 + 442 = 17238
Step 40: 17238 + 442 = 17680
Step 41: 17680 + 442 = 18122
Step 42: 18122 + 442 = 18564

So, 442*42 = 18564