Sure thing, let's get straight to it. We start with 344 and we're going to multiply it by 139, which means adding 344 to itself 139 times.
Step 1: 0 + 344 = 344
Step 2: 344 + 344 = 688
Step 3: 688 + 344 = 1032
Step 4: 1032 + 344 = 1376
Step 5: 1376 + 344 = 1720
Step 6: 1720 + 344 = 2064
Step 7: 2064 + 344 = 2408
Step 8: 2408 + 344 = 2752
Step 9: 2752 + 344 = 3096
Step 10: 3096 + 344 = 3440
Step 11: 3440 + 344 = 3784
Step 12: 3784 + 344 = 4128
Step 13: 4128 + 344 = 4472
Step 14: 4472 + 344 = 4816
Step 15: 4816 + 344 = 5160
Step 16: 5160 + 344 = 5504
Step 17: 5504 + 344 = 5848
Step 18: 5848 + 344 = 6192
Step 19: 6192 + 344 = 6536
Step 20: 6536 + 344 = 6880
Step 21: 6880 + 344 = 7224
Step 22: 7224 + 344 = 7568
Step 23: 7568 + 344 = 7912
Step 24: 7912 + 344 = 8256
Step 25: 8256 + 344 = 8600
Step 26: 8600 + 344 = 8944
Step 27: 8944 + 344 = 9288
Step 28: 9288 + 344 = 9632
Step 29: 9632 + 344 = 9976
Step 30: 9976 + 344 = 10320
Step 31: 10320 + 344 = 10664
Step 32: 10664 + 344 = 11008
Step 33: 11008 + 344 = 11352
Step 34: 11352 + 344 = 11696
Step 35: 11696 + 344 = 12040
Step 36: 12040 + 344 = 12384
Step 37: 12384 + 344 = 12728
Step 38: 12728 + 344 = 13072
Step 39: 13072 + 344 = 13416
Step 40: 13416 + 344 = 13760
Step 41: 13760 + 344 = 14104
Step 42: 14104 + 344 = 14448
Step 43: 14448 + 344 = 14792
Step 44: 14792 + 344 = 15136
Step 45: 15136 + 344 = 15480
Step 46: 15480 + 344 = 15824
Step 47: 15824 + 344 = 16168
Step 48: 16168 + 344 = 16512
Step 49: 16512 + 344 = 16856
Step 50: 16856 + 344 = 17200
Step 51: 17200 + 344 = 17544
Step 52: 17544 + 344 = 17888
Step 53: 17888 + 344 = 18232
Step 54: 18232 + 344 = 18576
Step 55: 18576 + 344 = 18920
Step 56: 18920 + 344 = 19264
Step 57: 19264 + 344 = 19608
Step 58: 19608 + 344 = 19952
Step 59: 19952 + 344 = 20296
Step 60: 20296 + 344 = 20640
Step 61: 20640 + 344 = 20984
Step 62: 20984 + 344 = 21328
Step 63: 21328 + 344 = 21672
Step 64: 21672 + 344 = 22016
Step 65: 22016 + 344 = 22360
Step 66: 22360 + 344 = 22704
Step 67: 22704 + 344 = 23048
Step 68: 23048 + 344 = 23392
Step 69: 23392 + 344 = 23736
Step 70: 23736 + 344 = 24080
Step 71: 24080 + 344 = 24424
Step 72: 24424 + 344 = 24768
Step 73: 24768 + 344 = 25112
Step 74: 25112 + 344 = 25456
Step 75: 25456 + 344 = 25800
Step 76: 25800 + 344 = 26144
Step 77: 26144 + 344 = 26488
Step 78: 26488 + 344 = 26832
Step 79: 26832 + 344 = 27176
Step 80: 27176 + 344 = 27520
Step 81: 27520 + 344 = 27864
Step 82: 27864 + 344 = 28208
Step 83: 28208 + 344 = 28552
Step 84: 28552 + 344 = 28896
Step 85: 28896 + 344 = 29240
Step 86: 29240 + 344 = 29584
Step 87: 29584 + 344 = 29928
Step 88: 29928 + 344 = 30272
Step 89: 30272 + 344 = 30616
Step 90: 30616 + 344 = 30960
Step 91: 30960 + 344 = 31304
Step 92: 31304 + 344 = 31648
Step 93: 31648 + 344 = 31992
Step 94: 31992 + 344 = 32336
Step 95: 32336 + 344 = 32680
Step 96: 32680 + 344 = 33024
Step 97: 33024 + 344 = 33368
Step 98: 33368 + 344 = 33712
Step 99: 33712 + 344 = 34056
Step 100: 34056 + 344 = 34400
Step 101: 34400 + 344 = 34744
Step 102: 34744 + 344 = 35088
Step 103: 35088 + 344 = 35432
Step 104: 35432 + 344 = 35776
Step 105: 35776 + 344 = 36120
Step 106: 36120 + 344 = 36464
Step 107: 36464 + 344 = 36808
Step 108: 36808 + 344 = 37152
Step 109: 37152 + 344 = 37496
Step 110: 37496 + 344 = 37840
Step 111: 37840 + 344 = 38184
Step 112: 38184 + 344 = 38528
Step 113: 38528 + 344 = 38872
Step 114: 38872 + 344 = 39216
Step 115: 39216 + 344 = 39560
Step 116: 39560 + 344 = 39904
Step 117: 39904 + 344 = 40248
Step 118: 40248 + 344 = 40592
Step 119: 40592 + 344 = 40936
Step 120: 40936 + 344 = 41280
Step 121: 41280 + 344 = 41624
Step 122: 41624 + 344 = 41968
Step 123: 41968 + 344 = 42312
Step 124: 42312 + 344 = 42656
Step 125: 42656 + 344 = 43000
Step 126: 43000 + 344 = 43344
Step 127: 43344 + 344 = 43688
Step 128: 43688 + 344 = 44032
Step 129: 44032 + 344 = 44376
Step 130: 44376 + 344 = 44720
Step 131: 44720 + 344 = 45064
Step 132: 45064 + 344 = 45408
Step 133: 45408 + 344 = 45752
Step 134: 45752 + 344 = 46096
Step 135: 46096 + 344 = 46440
Step 136: 46440 + 344 = 46784
Step 137: 46784 + 344 = 47128
Step 138: 47128 + 344 = 47472
Step 139: 47472 + 344 = 47816

So, 344*139 = 47816