Sure thing! We've got 426 and we're gonna multiply it by 159. That's the same as adding 426 to itself 159 times.
Step 1: 0 + 426 = 426
Step 2: 426 + 426 = 852
Step 3: 852 + 426 = 1278
Step 4: 1278 + 426 = 1704
Step 5: 1704 + 426 = 2130
Step 6: 2130 + 426 = 2556
Step 7: 2556 + 426 = 2982
Step 8: 2982 + 426 = 3408
Step 9: 3408 + 426 = 3834
Step 10: 3834 + 426 = 4260
Step 11: 4260 + 426 = 4686
Step 12: 4686 + 426 = 5112
Step 13: 5112 + 426 = 5538
Step 14: 5538 + 426 = 5964
Step 15: 5964 + 426 = 6390
Step 16: 6390 + 426 = 6816
Step 17: 6816 + 426 = 7242
Step 18: 7242 + 426 = 7668
Step 19: 7668 + 426 = 8094
Step 20: 8094 + 426 = 8520
Step 21: 8520 + 426 = 8946
Step 22: 8946 + 426 = 9372
Step 23: 9372 + 426 = 9798
Step 24: 9798 + 426 = 10224
Step 25: 10224 + 426 = 10650
Step 26: 10650 + 426 = 11076
Step 27: 11076 + 426 = 11502
Step 28: 11502 + 426 = 11928
Step 29: 11928 + 426 = 12354
Step 30: 12354 + 426 = 12780
Step 31: 12780 + 426 = 13206
Step 32: 13206 + 426 = 13632
Step 33: 13632 + 426 = 14058
Step 34: 14058 + 426 = 14484
Step 35: 14484 + 426 = 14910
Step 36: 14910 + 426 = 15336
Step 37: 15336 + 426 = 15762
Step 38: 15762 + 426 = 16188
Step 39: 16188 + 426 = 16614
Step 40: 16614 + 426 = 17040
Step 41: 17040 + 426 = 17466
Step 42: 17466 + 426 = 17892
Step 43: 17892 + 426 = 18318
Step 44: 18318 + 426 = 18744
Step 45: 18744 + 426 = 19170
Step 46: 19170 + 426 = 19596
Step 47: 19596 + 426 = 20022
Step 48: 20022 + 426 = 20448
Step 49: 20448 + 426 = 20874
Step 50: 20874 + 426 = 21300
Step 51: 21300 + 426 = 21726
Step 52: 21726 + 426 = 22152
Step 53: 22152 + 426 = 22578
Step 54: 22578 + 426 = 23004
Step 55: 23004 + 426 = 23430
Step 56: 23430 + 426 = 23856
Step 57: 23856 + 426 = 24282
Step 58: 24282 + 426 = 24708
Step 59: 24708 + 426 = 25134
Step 60: 25134 + 426 = 25560
Step 61: 25560 + 426 = 25986
Step 62: 25986 + 426 = 26412
Step 63: 26412 + 426 = 26838
Step 64: 26838 + 426 = 27264
Step 65: 27264 + 426 = 27690
Step 66: 27690 + 426 = 28116
Step 67: 28116 + 426 = 28542
Step 68: 28542 + 426 = 28968
Step 69: 28968 + 426 = 29394
Step 70: 29394 + 426 = 29820
Step 71: 29820 + 426 = 30246
Step 72: 30246 + 426 = 30672
Step 73: 30672 + 426 = 31098
Step 74: 31098 + 426 = 31524
Step 75: 31524 + 426 = 31950
Step 76: 31950 + 426 = 32376
Step 77: 32376 + 426 = 32802
Step 78: 32802 + 426 = 33228
Step 79: 33228 + 426 = 33654
Step 80: 33654 + 426 = 34080
Step 81: 34080 + 426 = 34506
Step 82: 34506 + 426 = 34932
Step 83: 34932 + 426 = 35358
Step 84: 35358 + 426 = 35784
Step 85: 35784 + 426 = 36210
Step 86: 36210 + 426 = 36636
Step 87: 36636 + 426 = 37062
Step 88: 37062 + 426 = 37488
Step 89: 37488 + 426 = 37914
Step 90: 37914 + 426 = 38340
Step 91: 38340 + 426 = 38766
Step 92: 38766 + 426 = 39192
Step 93: 39192 + 426 = 39618
Step 94: 39618 + 426 = 40044
Step 95: 40044 + 426 = 40470
Step 96: 40470 + 426 = 40896
Step 97: 40896 + 426 = 41322
Step 98: 41322 + 426 = 41748
Step 99: 41748 + 426 = 42174
Step 100: 42174 + 426 = 42600
Step 101: 42600 + 426 = 43026
Step 102: 43026 + 426 = 43452
Step 103: 43452 + 426 = 43878
Step 104: 43878 + 426 = 44304
Step 105: 44304 + 426 = 44730
Step 106: 44730 + 426 = 45156
Step 107: 45156 + 426 = 45582
Step 108: 45582 + 426 = 46008
Step 109: 46008 + 426 = 46434
Step 110: 46434 + 426 = 46860
Step 111: 46860 + 426 = 47286
Step 112: 47286 + 426 = 47712
Step 113: 47712 + 426 = 48138
Step 114: 48138 + 426 = 48564
Step 115: 48564 + 426 = 48990
Step 116: 48990 + 426 = 49416
Step 117: 49416 + 426 = 49842
Step 118: 49842 + 426 = 50268
Step 119: 50268 + 426 = 50694
Step 120: 50694 + 426 = 51120
Step 121: 51120 + 426 = 51546
Step 122: 51546 + 426 = 51972
Step 123: 51972 + 426 = 52398
Step 124: 52398 + 426 = 52824
Step 125: 52824 + 426 = 53250
Step 126: 53250 + 426 = 53676
Step 127: 53676 + 426 = 54102
Step 128: 54102 + 426 = 54528
Step 129: 54528 + 426 = 54954
Step 130: 54954 + 426 = 55380
Step 131: 55380 + 426 = 55806
Step 132: 55806 + 426 = 56232
Step 133: 56232 + 426 = 56658
Step 134: 56658 + 426 = 57084
Step 135: 57084 + 426 = 57510
Step 136: 57510 + 426 = 57936
Step 137: 57936 + 426 = 58362
Step 138: 58362 + 426 = 58788
Step 139: 58788 + 426 = 59214
Step 140: 59214 + 426 = 59640
Step 141: 59640 + 426 = 60066
Step 142: 60066 + 426 = 60492
Step 143: 60492 + 426 = 60918
Step 144: 60918 + 426 = 61344
Step 145: 61344 + 426 = 61770
Step 146: 61770 + 426 = 62196
Step 147: 62196 + 426 = 62622
Step 148: 62622 + 426 = 63048
Step 149: 63048 + 426 = 63474
Step 150: 63474 + 426 = 63900
Step 151: 63900 + 426 = 64326
Step 152: 64326 + 426 = 64752
Step 153: 64752 + 426 = 65178
Step 154: 65178 + 426 = 65604
Step 155: 65604 + 426 = 66030
Step 156: 66030 + 426 = 66456
Step 157: 66456 + 426 = 66882
Step 158: 66882 + 426 = 67308
Step 159: 67308 + 426 = 67734

So, 426*159 = 67734