OK, let's crack this. We're given 231 and our task is to multiply it by 29. Essentially, we'll be adding 231 to itself 29 times.
Step 1: 0 + 231 = 231
Step 2: 231 + 231 = 462
Step 3: 462 + 231 = 693
Step 4: 693 + 231 = 924
Step 5: 924 + 231 = 1155
Step 6: 1155 + 231 = 1386
Step 7: 1386 + 231 = 1617
Step 8: 1617 + 231 = 1848
Step 9: 1848 + 231 = 2079
Step 10: 2079 + 231 = 2310
Step 11: 2310 + 231 = 2541
Step 12: 2541 + 231 = 2772
Step 13: 2772 + 231 = 3003
Step 14: 3003 + 231 = 3234
Step 15: 3234 + 231 = 3465
Step 16: 3465 + 231 = 3696
Step 17: 3696 + 231 = 3927
Step 18: 3927 + 231 = 4158
Step 19: 4158 + 231 = 4389
Step 20: 4389 + 231 = 4620
Step 21: 4620 + 231 = 4851
Step 22: 4851 + 231 = 5082
Step 23: 5082 + 231 = 5313
Step 24: 5313 + 231 = 5544
Step 25: 5544 + 231 = 5775
Step 26: 5775 + 231 = 6006
Step 27: 6006 + 231 = 6237
Step 28: 6237 + 231 = 6468
Step 29: 6468 + 231 = 6699

So, 231*29 = 6699