OK, let's crack this. We're given 834 and our task is to multiply it by 170. Essentially, we'll be adding 834 to itself 170 times.
Step 1: 0 + 834 = 834
Step 2: 834 + 834 = 1668
Step 3: 1668 + 834 = 2502
Step 4: 2502 + 834 = 3336
Step 5: 3336 + 834 = 4170
Step 6: 4170 + 834 = 5004
Step 7: 5004 + 834 = 5838
Step 8: 5838 + 834 = 6672
Step 9: 6672 + 834 = 7506
Step 10: 7506 + 834 = 8340
Step 11: 8340 + 834 = 9174
Step 12: 9174 + 834 = 10008
Step 13: 10008 + 834 = 10842
Step 14: 10842 + 834 = 11676
Step 15: 11676 + 834 = 12510
Step 16: 12510 + 834 = 13344
Step 17: 13344 + 834 = 14178
Step 18: 14178 + 834 = 15012
Step 19: 15012 + 834 = 15846
Step 20: 15846 + 834 = 16680
Step 21: 16680 + 834 = 17514
Step 22: 17514 + 834 = 18348
Step 23: 18348 + 834 = 19182
Step 24: 19182 + 834 = 20016
Step 25: 20016 + 834 = 20850
Step 26: 20850 + 834 = 21684
Step 27: 21684 + 834 = 22518
Step 28: 22518 + 834 = 23352
Step 29: 23352 + 834 = 24186
Step 30: 24186 + 834 = 25020
Step 31: 25020 + 834 = 25854
Step 32: 25854 + 834 = 26688
Step 33: 26688 + 834 = 27522
Step 34: 27522 + 834 = 28356
Step 35: 28356 + 834 = 29190
Step 36: 29190 + 834 = 30024
Step 37: 30024 + 834 = 30858
Step 38: 30858 + 834 = 31692
Step 39: 31692 + 834 = 32526
Step 40: 32526 + 834 = 33360
Step 41: 33360 + 834 = 34194
Step 42: 34194 + 834 = 35028
Step 43: 35028 + 834 = 35862
Step 44: 35862 + 834 = 36696
Step 45: 36696 + 834 = 37530
Step 46: 37530 + 834 = 38364
Step 47: 38364 + 834 = 39198
Step 48: 39198 + 834 = 40032
Step 49: 40032 + 834 = 40866
Step 50: 40866 + 834 = 41700
Step 51: 41700 + 834 = 42534
Step 52: 42534 + 834 = 43368
Step 53: 43368 + 834 = 44202
Step 54: 44202 + 834 = 45036
Step 55: 45036 + 834 = 45870
Step 56: 45870 + 834 = 46704
Step 57: 46704 + 834 = 47538
Step 58: 47538 + 834 = 48372
Step 59: 48372 + 834 = 49206
Step 60: 49206 + 834 = 50040
Step 61: 50040 + 834 = 50874
Step 62: 50874 + 834 = 51708
Step 63: 51708 + 834 = 52542
Step 64: 52542 + 834 = 53376
Step 65: 53376 + 834 = 54210
Step 66: 54210 + 834 = 55044
Step 67: 55044 + 834 = 55878
Step 68: 55878 + 834 = 56712
Step 69: 56712 + 834 = 57546
Step 70: 57546 + 834 = 58380
Step 71: 58380 + 834 = 59214
Step 72: 59214 + 834 = 60048
Step 73: 60048 + 834 = 60882
Step 74: 60882 + 834 = 61716
Step 75: 61716 + 834 = 62550
Step 76: 62550 + 834 = 63384
Step 77: 63384 + 834 = 64218
Step 78: 64218 + 834 = 65052
Step 79: 65052 + 834 = 65886
Step 80: 65886 + 834 = 66720
Step 81: 66720 + 834 = 67554
Step 82: 67554 + 834 = 68388
Step 83: 68388 + 834 = 69222
Step 84: 69222 + 834 = 70056
Step 85: 70056 + 834 = 70890
Step 86: 70890 + 834 = 71724
Step 87: 71724 + 834 = 72558
Step 88: 72558 + 834 = 73392
Step 89: 73392 + 834 = 74226
Step 90: 74226 + 834 = 75060
Step 91: 75060 + 834 = 75894
Step 92: 75894 + 834 = 76728
Step 93: 76728 + 834 = 77562
Step 94: 77562 + 834 = 78396
Step 95: 78396 + 834 = 79230
Step 96: 79230 + 834 = 80064
Step 97: 80064 + 834 = 80898
Step 98: 80898 + 834 = 81732
Step 99: 81732 + 834 = 82566
Step 100: 82566 + 834 = 83400
Step 101: 83400 + 834 = 84234
Step 102: 84234 + 834 = 85068
Step 103: 85068 + 834 = 85902
Step 104: 85902 + 834 = 86736
Step 105: 86736 + 834 = 87570
Step 106: 87570 + 834 = 88404
Step 107: 88404 + 834 = 89238
Step 108: 89238 + 834 = 90072
Step 109: 90072 + 834 = 90906
Step 110: 90906 + 834 = 91740
Step 111: 91740 + 834 = 92574
Step 112: 92574 + 834 = 93408
Step 113: 93408 + 834 = 94242
Step 114: 94242 + 834 = 95076
Step 115: 95076 + 834 = 95910
Step 116: 95910 + 834 = 96744
Step 117: 96744 + 834 = 97578
Step 118: 97578 + 834 = 98412
Step 119: 98412 + 834 = 99246
Step 120: 99246 + 834 = 100080
Step 121: 100080 + 834 = 100914
Step 122: 100914 + 834 = 101748
Step 123: 101748 + 834 = 102582
Step 124: 102582 + 834 = 103416
Step 125: 103416 + 834 = 104250
Step 126: 104250 + 834 = 105084
Step 127: 105084 + 834 = 105918
Step 128: 105918 + 834 = 106752
Step 129: 106752 + 834 = 107586
Step 130: 107586 + 834 = 108420
Step 131: 108420 + 834 = 109254
Step 132: 109254 + 834 = 110088
Step 133: 110088 + 834 = 110922
Step 134: 110922 + 834 = 111756
Step 135: 111756 + 834 = 112590
Step 136: 112590 + 834 = 113424
Step 137: 113424 + 834 = 114258
Step 138: 114258 + 834 = 115092
Step 139: 115092 + 834 = 115926
Step 140: 115926 + 834 = 116760
Step 141: 116760 + 834 = 117594
Step 142: 117594 + 834 = 118428
Step 143: 118428 + 834 = 119262
Step 144: 119262 + 834 = 120096
Step 145: 120096 + 834 = 120930
Step 146: 120930 + 834 = 121764
Step 147: 121764 + 834 = 122598
Step 148: 122598 + 834 = 123432
Step 149: 123432 + 834 = 124266
Step 150: 124266 + 834 = 125100
Step 151: 125100 + 834 = 125934
Step 152: 125934 + 834 = 126768
Step 153: 126768 + 834 = 127602
Step 154: 127602 + 834 = 128436
Step 155: 128436 + 834 = 129270
Step 156: 129270 + 834 = 130104
Step 157: 130104 + 834 = 130938
Step 158: 130938 + 834 = 131772
Step 159: 131772 + 834 = 132606
Step 160: 132606 + 834 = 133440
Step 161: 133440 + 834 = 134274
Step 162: 134274 + 834 = 135108
Step 163: 135108 + 834 = 135942
Step 164: 135942 + 834 = 136776
Step 165: 136776 + 834 = 137610
Step 166: 137610 + 834 = 138444
Step 167: 138444 + 834 = 139278
Step 168: 139278 + 834 = 140112
Step 169: 140112 + 834 = 140946
Step 170: 140946 + 834 = 141780

So, 834*170 = 141780