Let's roll up our sleeves and solve this. We have 856 and we're going to multiply it by 169, essentially adding 856 to itself 169 times.
Step 1: 0 + 856 = 856
Step 2: 856 + 856 = 1712
Step 3: 1712 + 856 = 2568
Step 4: 2568 + 856 = 3424
Step 5: 3424 + 856 = 4280
Step 6: 4280 + 856 = 5136
Step 7: 5136 + 856 = 5992
Step 8: 5992 + 856 = 6848
Step 9: 6848 + 856 = 7704
Step 10: 7704 + 856 = 8560
Step 11: 8560 + 856 = 9416
Step 12: 9416 + 856 = 10272
Step 13: 10272 + 856 = 11128
Step 14: 11128 + 856 = 11984
Step 15: 11984 + 856 = 12840
Step 16: 12840 + 856 = 13696
Step 17: 13696 + 856 = 14552
Step 18: 14552 + 856 = 15408
Step 19: 15408 + 856 = 16264
Step 20: 16264 + 856 = 17120
Step 21: 17120 + 856 = 17976
Step 22: 17976 + 856 = 18832
Step 23: 18832 + 856 = 19688
Step 24: 19688 + 856 = 20544
Step 25: 20544 + 856 = 21400
Step 26: 21400 + 856 = 22256
Step 27: 22256 + 856 = 23112
Step 28: 23112 + 856 = 23968
Step 29: 23968 + 856 = 24824
Step 30: 24824 + 856 = 25680
Step 31: 25680 + 856 = 26536
Step 32: 26536 + 856 = 27392
Step 33: 27392 + 856 = 28248
Step 34: 28248 + 856 = 29104
Step 35: 29104 + 856 = 29960
Step 36: 29960 + 856 = 30816
Step 37: 30816 + 856 = 31672
Step 38: 31672 + 856 = 32528
Step 39: 32528 + 856 = 33384
Step 40: 33384 + 856 = 34240
Step 41: 34240 + 856 = 35096
Step 42: 35096 + 856 = 35952
Step 43: 35952 + 856 = 36808
Step 44: 36808 + 856 = 37664
Step 45: 37664 + 856 = 38520
Step 46: 38520 + 856 = 39376
Step 47: 39376 + 856 = 40232
Step 48: 40232 + 856 = 41088
Step 49: 41088 + 856 = 41944
Step 50: 41944 + 856 = 42800
Step 51: 42800 + 856 = 43656
Step 52: 43656 + 856 = 44512
Step 53: 44512 + 856 = 45368
Step 54: 45368 + 856 = 46224
Step 55: 46224 + 856 = 47080
Step 56: 47080 + 856 = 47936
Step 57: 47936 + 856 = 48792
Step 58: 48792 + 856 = 49648
Step 59: 49648 + 856 = 50504
Step 60: 50504 + 856 = 51360
Step 61: 51360 + 856 = 52216
Step 62: 52216 + 856 = 53072
Step 63: 53072 + 856 = 53928
Step 64: 53928 + 856 = 54784
Step 65: 54784 + 856 = 55640
Step 66: 55640 + 856 = 56496
Step 67: 56496 + 856 = 57352
Step 68: 57352 + 856 = 58208
Step 69: 58208 + 856 = 59064
Step 70: 59064 + 856 = 59920
Step 71: 59920 + 856 = 60776
Step 72: 60776 + 856 = 61632
Step 73: 61632 + 856 = 62488
Step 74: 62488 + 856 = 63344
Step 75: 63344 + 856 = 64200
Step 76: 64200 + 856 = 65056
Step 77: 65056 + 856 = 65912
Step 78: 65912 + 856 = 66768
Step 79: 66768 + 856 = 67624
Step 80: 67624 + 856 = 68480
Step 81: 68480 + 856 = 69336
Step 82: 69336 + 856 = 70192
Step 83: 70192 + 856 = 71048
Step 84: 71048 + 856 = 71904
Step 85: 71904 + 856 = 72760
Step 86: 72760 + 856 = 73616
Step 87: 73616 + 856 = 74472
Step 88: 74472 + 856 = 75328
Step 89: 75328 + 856 = 76184
Step 90: 76184 + 856 = 77040
Step 91: 77040 + 856 = 77896
Step 92: 77896 + 856 = 78752
Step 93: 78752 + 856 = 79608
Step 94: 79608 + 856 = 80464
Step 95: 80464 + 856 = 81320
Step 96: 81320 + 856 = 82176
Step 97: 82176 + 856 = 83032
Step 98: 83032 + 856 = 83888
Step 99: 83888 + 856 = 84744
Step 100: 84744 + 856 = 85600
Step 101: 85600 + 856 = 86456
Step 102: 86456 + 856 = 87312
Step 103: 87312 + 856 = 88168
Step 104: 88168 + 856 = 89024
Step 105: 89024 + 856 = 89880
Step 106: 89880 + 856 = 90736
Step 107: 90736 + 856 = 91592
Step 108: 91592 + 856 = 92448
Step 109: 92448 + 856 = 93304
Step 110: 93304 + 856 = 94160
Step 111: 94160 + 856 = 95016
Step 112: 95016 + 856 = 95872
Step 113: 95872 + 856 = 96728
Step 114: 96728 + 856 = 97584
Step 115: 97584 + 856 = 98440
Step 116: 98440 + 856 = 99296
Step 117: 99296 + 856 = 100152
Step 118: 100152 + 856 = 101008
Step 119: 101008 + 856 = 101864
Step 120: 101864 + 856 = 102720
Step 121: 102720 + 856 = 103576
Step 122: 103576 + 856 = 104432
Step 123: 104432 + 856 = 105288
Step 124: 105288 + 856 = 106144
Step 125: 106144 + 856 = 107000
Step 126: 107000 + 856 = 107856
Step 127: 107856 + 856 = 108712
Step 128: 108712 + 856 = 109568
Step 129: 109568 + 856 = 110424
Step 130: 110424 + 856 = 111280
Step 131: 111280 + 856 = 112136
Step 132: 112136 + 856 = 112992
Step 133: 112992 + 856 = 113848
Step 134: 113848 + 856 = 114704
Step 135: 114704 + 856 = 115560
Step 136: 115560 + 856 = 116416
Step 137: 116416 + 856 = 117272
Step 138: 117272 + 856 = 118128
Step 139: 118128 + 856 = 118984
Step 140: 118984 + 856 = 119840
Step 141: 119840 + 856 = 120696
Step 142: 120696 + 856 = 121552
Step 143: 121552 + 856 = 122408
Step 144: 122408 + 856 = 123264
Step 145: 123264 + 856 = 124120
Step 146: 124120 + 856 = 124976
Step 147: 124976 + 856 = 125832
Step 148: 125832 + 856 = 126688
Step 149: 126688 + 856 = 127544
Step 150: 127544 + 856 = 128400
Step 151: 128400 + 856 = 129256
Step 152: 129256 + 856 = 130112
Step 153: 130112 + 856 = 130968
Step 154: 130968 + 856 = 131824
Step 155: 131824 + 856 = 132680
Step 156: 132680 + 856 = 133536
Step 157: 133536 + 856 = 134392
Step 158: 134392 + 856 = 135248
Step 159: 135248 + 856 = 136104
Step 160: 136104 + 856 = 136960
Step 161: 136960 + 856 = 137816
Step 162: 137816 + 856 = 138672
Step 163: 138672 + 856 = 139528
Step 164: 139528 + 856 = 140384
Step 165: 140384 + 856 = 141240
Step 166: 141240 + 856 = 142096
Step 167: 142096 + 856 = 142952
Step 168: 142952 + 856 = 143808
Step 169: 143808 + 856 = 144664

So, 856*169 = 144664