Let's get this math done. We have 428 and we're going to multiply it by 160. This is the same as taking 428 and adding it to itself 160 times.
Step 1: 0 + 428 = 428
Step 2: 428 + 428 = 856
Step 3: 856 + 428 = 1284
Step 4: 1284 + 428 = 1712
Step 5: 1712 + 428 = 2140
Step 6: 2140 + 428 = 2568
Step 7: 2568 + 428 = 2996
Step 8: 2996 + 428 = 3424
Step 9: 3424 + 428 = 3852
Step 10: 3852 + 428 = 4280
Step 11: 4280 + 428 = 4708
Step 12: 4708 + 428 = 5136
Step 13: 5136 + 428 = 5564
Step 14: 5564 + 428 = 5992
Step 15: 5992 + 428 = 6420
Step 16: 6420 + 428 = 6848
Step 17: 6848 + 428 = 7276
Step 18: 7276 + 428 = 7704
Step 19: 7704 + 428 = 8132
Step 20: 8132 + 428 = 8560
Step 21: 8560 + 428 = 8988
Step 22: 8988 + 428 = 9416
Step 23: 9416 + 428 = 9844
Step 24: 9844 + 428 = 10272
Step 25: 10272 + 428 = 10700
Step 26: 10700 + 428 = 11128
Step 27: 11128 + 428 = 11556
Step 28: 11556 + 428 = 11984
Step 29: 11984 + 428 = 12412
Step 30: 12412 + 428 = 12840
Step 31: 12840 + 428 = 13268
Step 32: 13268 + 428 = 13696
Step 33: 13696 + 428 = 14124
Step 34: 14124 + 428 = 14552
Step 35: 14552 + 428 = 14980
Step 36: 14980 + 428 = 15408
Step 37: 15408 + 428 = 15836
Step 38: 15836 + 428 = 16264
Step 39: 16264 + 428 = 16692
Step 40: 16692 + 428 = 17120
Step 41: 17120 + 428 = 17548
Step 42: 17548 + 428 = 17976
Step 43: 17976 + 428 = 18404
Step 44: 18404 + 428 = 18832
Step 45: 18832 + 428 = 19260
Step 46: 19260 + 428 = 19688
Step 47: 19688 + 428 = 20116
Step 48: 20116 + 428 = 20544
Step 49: 20544 + 428 = 20972
Step 50: 20972 + 428 = 21400
Step 51: 21400 + 428 = 21828
Step 52: 21828 + 428 = 22256
Step 53: 22256 + 428 = 22684
Step 54: 22684 + 428 = 23112
Step 55: 23112 + 428 = 23540
Step 56: 23540 + 428 = 23968
Step 57: 23968 + 428 = 24396
Step 58: 24396 + 428 = 24824
Step 59: 24824 + 428 = 25252
Step 60: 25252 + 428 = 25680
Step 61: 25680 + 428 = 26108
Step 62: 26108 + 428 = 26536
Step 63: 26536 + 428 = 26964
Step 64: 26964 + 428 = 27392
Step 65: 27392 + 428 = 27820
Step 66: 27820 + 428 = 28248
Step 67: 28248 + 428 = 28676
Step 68: 28676 + 428 = 29104
Step 69: 29104 + 428 = 29532
Step 70: 29532 + 428 = 29960
Step 71: 29960 + 428 = 30388
Step 72: 30388 + 428 = 30816
Step 73: 30816 + 428 = 31244
Step 74: 31244 + 428 = 31672
Step 75: 31672 + 428 = 32100
Step 76: 32100 + 428 = 32528
Step 77: 32528 + 428 = 32956
Step 78: 32956 + 428 = 33384
Step 79: 33384 + 428 = 33812
Step 80: 33812 + 428 = 34240
Step 81: 34240 + 428 = 34668
Step 82: 34668 + 428 = 35096
Step 83: 35096 + 428 = 35524
Step 84: 35524 + 428 = 35952
Step 85: 35952 + 428 = 36380
Step 86: 36380 + 428 = 36808
Step 87: 36808 + 428 = 37236
Step 88: 37236 + 428 = 37664
Step 89: 37664 + 428 = 38092
Step 90: 38092 + 428 = 38520
Step 91: 38520 + 428 = 38948
Step 92: 38948 + 428 = 39376
Step 93: 39376 + 428 = 39804
Step 94: 39804 + 428 = 40232
Step 95: 40232 + 428 = 40660
Step 96: 40660 + 428 = 41088
Step 97: 41088 + 428 = 41516
Step 98: 41516 + 428 = 41944
Step 99: 41944 + 428 = 42372
Step 100: 42372 + 428 = 42800
Step 101: 42800 + 428 = 43228
Step 102: 43228 + 428 = 43656
Step 103: 43656 + 428 = 44084
Step 104: 44084 + 428 = 44512
Step 105: 44512 + 428 = 44940
Step 106: 44940 + 428 = 45368
Step 107: 45368 + 428 = 45796
Step 108: 45796 + 428 = 46224
Step 109: 46224 + 428 = 46652
Step 110: 46652 + 428 = 47080
Step 111: 47080 + 428 = 47508
Step 112: 47508 + 428 = 47936
Step 113: 47936 + 428 = 48364
Step 114: 48364 + 428 = 48792
Step 115: 48792 + 428 = 49220
Step 116: 49220 + 428 = 49648
Step 117: 49648 + 428 = 50076
Step 118: 50076 + 428 = 50504
Step 119: 50504 + 428 = 50932
Step 120: 50932 + 428 = 51360
Step 121: 51360 + 428 = 51788
Step 122: 51788 + 428 = 52216
Step 123: 52216 + 428 = 52644
Step 124: 52644 + 428 = 53072
Step 125: 53072 + 428 = 53500
Step 126: 53500 + 428 = 53928
Step 127: 53928 + 428 = 54356
Step 128: 54356 + 428 = 54784
Step 129: 54784 + 428 = 55212
Step 130: 55212 + 428 = 55640
Step 131: 55640 + 428 = 56068
Step 132: 56068 + 428 = 56496
Step 133: 56496 + 428 = 56924
Step 134: 56924 + 428 = 57352
Step 135: 57352 + 428 = 57780
Step 136: 57780 + 428 = 58208
Step 137: 58208 + 428 = 58636
Step 138: 58636 + 428 = 59064
Step 139: 59064 + 428 = 59492
Step 140: 59492 + 428 = 59920
Step 141: 59920 + 428 = 60348
Step 142: 60348 + 428 = 60776
Step 143: 60776 + 428 = 61204
Step 144: 61204 + 428 = 61632
Step 145: 61632 + 428 = 62060
Step 146: 62060 + 428 = 62488
Step 147: 62488 + 428 = 62916
Step 148: 62916 + 428 = 63344
Step 149: 63344 + 428 = 63772
Step 150: 63772 + 428 = 64200
Step 151: 64200 + 428 = 64628
Step 152: 64628 + 428 = 65056
Step 153: 65056 + 428 = 65484
Step 154: 65484 + 428 = 65912
Step 155: 65912 + 428 = 66340
Step 156: 66340 + 428 = 66768
Step 157: 66768 + 428 = 67196
Step 158: 67196 + 428 = 67624
Step 159: 67624 + 428 = 68052
Step 160: 68052 + 428 = 68480

So, 428*160 = 68480