Sure thing, let's get straight to it. We start with 338 and we're going to multiply it by 109, which means adding 338 to itself 109 times.
Step 1: 0 + 338 = 338
Step 2: 338 + 338 = 676
Step 3: 676 + 338 = 1014
Step 4: 1014 + 338 = 1352
Step 5: 1352 + 338 = 1690
Step 6: 1690 + 338 = 2028
Step 7: 2028 + 338 = 2366
Step 8: 2366 + 338 = 2704
Step 9: 2704 + 338 = 3042
Step 10: 3042 + 338 = 3380
Step 11: 3380 + 338 = 3718
Step 12: 3718 + 338 = 4056
Step 13: 4056 + 338 = 4394
Step 14: 4394 + 338 = 4732
Step 15: 4732 + 338 = 5070
Step 16: 5070 + 338 = 5408
Step 17: 5408 + 338 = 5746
Step 18: 5746 + 338 = 6084
Step 19: 6084 + 338 = 6422
Step 20: 6422 + 338 = 6760
Step 21: 6760 + 338 = 7098
Step 22: 7098 + 338 = 7436
Step 23: 7436 + 338 = 7774
Step 24: 7774 + 338 = 8112
Step 25: 8112 + 338 = 8450
Step 26: 8450 + 338 = 8788
Step 27: 8788 + 338 = 9126
Step 28: 9126 + 338 = 9464
Step 29: 9464 + 338 = 9802
Step 30: 9802 + 338 = 10140
Step 31: 10140 + 338 = 10478
Step 32: 10478 + 338 = 10816
Step 33: 10816 + 338 = 11154
Step 34: 11154 + 338 = 11492
Step 35: 11492 + 338 = 11830
Step 36: 11830 + 338 = 12168
Step 37: 12168 + 338 = 12506
Step 38: 12506 + 338 = 12844
Step 39: 12844 + 338 = 13182
Step 40: 13182 + 338 = 13520
Step 41: 13520 + 338 = 13858
Step 42: 13858 + 338 = 14196
Step 43: 14196 + 338 = 14534
Step 44: 14534 + 338 = 14872
Step 45: 14872 + 338 = 15210
Step 46: 15210 + 338 = 15548
Step 47: 15548 + 338 = 15886
Step 48: 15886 + 338 = 16224
Step 49: 16224 + 338 = 16562
Step 50: 16562 + 338 = 16900
Step 51: 16900 + 338 = 17238
Step 52: 17238 + 338 = 17576
Step 53: 17576 + 338 = 17914
Step 54: 17914 + 338 = 18252
Step 55: 18252 + 338 = 18590
Step 56: 18590 + 338 = 18928
Step 57: 18928 + 338 = 19266
Step 58: 19266 + 338 = 19604
Step 59: 19604 + 338 = 19942
Step 60: 19942 + 338 = 20280
Step 61: 20280 + 338 = 20618
Step 62: 20618 + 338 = 20956
Step 63: 20956 + 338 = 21294
Step 64: 21294 + 338 = 21632
Step 65: 21632 + 338 = 21970
Step 66: 21970 + 338 = 22308
Step 67: 22308 + 338 = 22646
Step 68: 22646 + 338 = 22984
Step 69: 22984 + 338 = 23322
Step 70: 23322 + 338 = 23660
Step 71: 23660 + 338 = 23998
Step 72: 23998 + 338 = 24336
Step 73: 24336 + 338 = 24674
Step 74: 24674 + 338 = 25012
Step 75: 25012 + 338 = 25350
Step 76: 25350 + 338 = 25688
Step 77: 25688 + 338 = 26026
Step 78: 26026 + 338 = 26364
Step 79: 26364 + 338 = 26702
Step 80: 26702 + 338 = 27040
Step 81: 27040 + 338 = 27378
Step 82: 27378 + 338 = 27716
Step 83: 27716 + 338 = 28054
Step 84: 28054 + 338 = 28392
Step 85: 28392 + 338 = 28730
Step 86: 28730 + 338 = 29068
Step 87: 29068 + 338 = 29406
Step 88: 29406 + 338 = 29744
Step 89: 29744 + 338 = 30082
Step 90: 30082 + 338 = 30420
Step 91: 30420 + 338 = 30758
Step 92: 30758 + 338 = 31096
Step 93: 31096 + 338 = 31434
Step 94: 31434 + 338 = 31772
Step 95: 31772 + 338 = 32110
Step 96: 32110 + 338 = 32448
Step 97: 32448 + 338 = 32786
Step 98: 32786 + 338 = 33124
Step 99: 33124 + 338 = 33462
Step 100: 33462 + 338 = 33800
Step 101: 33800 + 338 = 34138
Step 102: 34138 + 338 = 34476
Step 103: 34476 + 338 = 34814
Step 104: 34814 + 338 = 35152
Step 105: 35152 + 338 = 35490
Step 106: 35490 + 338 = 35828
Step 107: 35828 + 338 = 36166
Step 108: 36166 + 338 = 36504
Step 109: 36504 + 338 = 36842

So, 338*109 = 36842