OK, let's crack this. We're given 422 and our task is to multiply it by 29. Essentially, we'll be adding 422 to itself 29 times.
Step 1: 0 + 422 = 422
Step 2: 422 + 422 = 844
Step 3: 844 + 422 = 1266
Step 4: 1266 + 422 = 1688
Step 5: 1688 + 422 = 2110
Step 6: 2110 + 422 = 2532
Step 7: 2532 + 422 = 2954
Step 8: 2954 + 422 = 3376
Step 9: 3376 + 422 = 3798
Step 10: 3798 + 422 = 4220
Step 11: 4220 + 422 = 4642
Step 12: 4642 + 422 = 5064
Step 13: 5064 + 422 = 5486
Step 14: 5486 + 422 = 5908
Step 15: 5908 + 422 = 6330
Step 16: 6330 + 422 = 6752
Step 17: 6752 + 422 = 7174
Step 18: 7174 + 422 = 7596
Step 19: 7596 + 422 = 8018
Step 20: 8018 + 422 = 8440
Step 21: 8440 + 422 = 8862
Step 22: 8862 + 422 = 9284
Step 23: 9284 + 422 = 9706
Step 24: 9706 + 422 = 10128
Step 25: 10128 + 422 = 10550
Step 26: 10550 + 422 = 10972
Step 27: 10972 + 422 = 11394
Step 28: 11394 + 422 = 11816
Step 29: 11816 + 422 = 12238

So, 422*29 = 12238