Let's roll up our sleeves and solve this. We have 891 and we're going to multiply it by 234, essentially adding 891 to itself 234 times.
Step 1: 0 + 891 = 891
Step 2: 891 + 891 = 1782
Step 3: 1782 + 891 = 2673
Step 4: 2673 + 891 = 3564
Step 5: 3564 + 891 = 4455
Step 6: 4455 + 891 = 5346
Step 7: 5346 + 891 = 6237
Step 8: 6237 + 891 = 7128
Step 9: 7128 + 891 = 8019
Step 10: 8019 + 891 = 8910
Step 11: 8910 + 891 = 9801
Step 12: 9801 + 891 = 10692
Step 13: 10692 + 891 = 11583
Step 14: 11583 + 891 = 12474
Step 15: 12474 + 891 = 13365
Step 16: 13365 + 891 = 14256
Step 17: 14256 + 891 = 15147
Step 18: 15147 + 891 = 16038
Step 19: 16038 + 891 = 16929
Step 20: 16929 + 891 = 17820
Step 21: 17820 + 891 = 18711
Step 22: 18711 + 891 = 19602
Step 23: 19602 + 891 = 20493
Step 24: 20493 + 891 = 21384
Step 25: 21384 + 891 = 22275
Step 26: 22275 + 891 = 23166
Step 27: 23166 + 891 = 24057
Step 28: 24057 + 891 = 24948
Step 29: 24948 + 891 = 25839
Step 30: 25839 + 891 = 26730
Step 31: 26730 + 891 = 27621
Step 32: 27621 + 891 = 28512
Step 33: 28512 + 891 = 29403
Step 34: 29403 + 891 = 30294
Step 35: 30294 + 891 = 31185
Step 36: 31185 + 891 = 32076
Step 37: 32076 + 891 = 32967
Step 38: 32967 + 891 = 33858
Step 39: 33858 + 891 = 34749
Step 40: 34749 + 891 = 35640
Step 41: 35640 + 891 = 36531
Step 42: 36531 + 891 = 37422
Step 43: 37422 + 891 = 38313
Step 44: 38313 + 891 = 39204
Step 45: 39204 + 891 = 40095
Step 46: 40095 + 891 = 40986
Step 47: 40986 + 891 = 41877
Step 48: 41877 + 891 = 42768
Step 49: 42768 + 891 = 43659
Step 50: 43659 + 891 = 44550
Step 51: 44550 + 891 = 45441
Step 52: 45441 + 891 = 46332
Step 53: 46332 + 891 = 47223
Step 54: 47223 + 891 = 48114
Step 55: 48114 + 891 = 49005
Step 56: 49005 + 891 = 49896
Step 57: 49896 + 891 = 50787
Step 58: 50787 + 891 = 51678
Step 59: 51678 + 891 = 52569
Step 60: 52569 + 891 = 53460
Step 61: 53460 + 891 = 54351
Step 62: 54351 + 891 = 55242
Step 63: 55242 + 891 = 56133
Step 64: 56133 + 891 = 57024
Step 65: 57024 + 891 = 57915
Step 66: 57915 + 891 = 58806
Step 67: 58806 + 891 = 59697
Step 68: 59697 + 891 = 60588
Step 69: 60588 + 891 = 61479
Step 70: 61479 + 891 = 62370
Step 71: 62370 + 891 = 63261
Step 72: 63261 + 891 = 64152
Step 73: 64152 + 891 = 65043
Step 74: 65043 + 891 = 65934
Step 75: 65934 + 891 = 66825
Step 76: 66825 + 891 = 67716
Step 77: 67716 + 891 = 68607
Step 78: 68607 + 891 = 69498
Step 79: 69498 + 891 = 70389
Step 80: 70389 + 891 = 71280
Step 81: 71280 + 891 = 72171
Step 82: 72171 + 891 = 73062
Step 83: 73062 + 891 = 73953
Step 84: 73953 + 891 = 74844
Step 85: 74844 + 891 = 75735
Step 86: 75735 + 891 = 76626
Step 87: 76626 + 891 = 77517
Step 88: 77517 + 891 = 78408
Step 89: 78408 + 891 = 79299
Step 90: 79299 + 891 = 80190
Step 91: 80190 + 891 = 81081
Step 92: 81081 + 891 = 81972
Step 93: 81972 + 891 = 82863
Step 94: 82863 + 891 = 83754
Step 95: 83754 + 891 = 84645
Step 96: 84645 + 891 = 85536
Step 97: 85536 + 891 = 86427
Step 98: 86427 + 891 = 87318
Step 99: 87318 + 891 = 88209
Step 100: 88209 + 891 = 89100
Step 101: 89100 + 891 = 89991
Step 102: 89991 + 891 = 90882
Step 103: 90882 + 891 = 91773
Step 104: 91773 + 891 = 92664
Step 105: 92664 + 891 = 93555
Step 106: 93555 + 891 = 94446
Step 107: 94446 + 891 = 95337
Step 108: 95337 + 891 = 96228
Step 109: 96228 + 891 = 97119
Step 110: 97119 + 891 = 98010
Step 111: 98010 + 891 = 98901
Step 112: 98901 + 891 = 99792
Step 113: 99792 + 891 = 100683
Step 114: 100683 + 891 = 101574
Step 115: 101574 + 891 = 102465
Step 116: 102465 + 891 = 103356
Step 117: 103356 + 891 = 104247
Step 118: 104247 + 891 = 105138
Step 119: 105138 + 891 = 106029
Step 120: 106029 + 891 = 106920
Step 121: 106920 + 891 = 107811
Step 122: 107811 + 891 = 108702
Step 123: 108702 + 891 = 109593
Step 124: 109593 + 891 = 110484
Step 125: 110484 + 891 = 111375
Step 126: 111375 + 891 = 112266
Step 127: 112266 + 891 = 113157
Step 128: 113157 + 891 = 114048
Step 129: 114048 + 891 = 114939
Step 130: 114939 + 891 = 115830
Step 131: 115830 + 891 = 116721
Step 132: 116721 + 891 = 117612
Step 133: 117612 + 891 = 118503
Step 134: 118503 + 891 = 119394
Step 135: 119394 + 891 = 120285
Step 136: 120285 + 891 = 121176
Step 137: 121176 + 891 = 122067
Step 138: 122067 + 891 = 122958
Step 139: 122958 + 891 = 123849
Step 140: 123849 + 891 = 124740
Step 141: 124740 + 891 = 125631
Step 142: 125631 + 891 = 126522
Step 143: 126522 + 891 = 127413
Step 144: 127413 + 891 = 128304
Step 145: 128304 + 891 = 129195
Step 146: 129195 + 891 = 130086
Step 147: 130086 + 891 = 130977
Step 148: 130977 + 891 = 131868
Step 149: 131868 + 891 = 132759
Step 150: 132759 + 891 = 133650
Step 151: 133650 + 891 = 134541
Step 152: 134541 + 891 = 135432
Step 153: 135432 + 891 = 136323
Step 154: 136323 + 891 = 137214
Step 155: 137214 + 891 = 138105
Step 156: 138105 + 891 = 138996
Step 157: 138996 + 891 = 139887
Step 158: 139887 + 891 = 140778
Step 159: 140778 + 891 = 141669
Step 160: 141669 + 891 = 142560
Step 161: 142560 + 891 = 143451
Step 162: 143451 + 891 = 144342
Step 163: 144342 + 891 = 145233
Step 164: 145233 + 891 = 146124
Step 165: 146124 + 891 = 147015
Step 166: 147015 + 891 = 147906
Step 167: 147906 + 891 = 148797
Step 168: 148797 + 891 = 149688
Step 169: 149688 + 891 = 150579
Step 170: 150579 + 891 = 151470
Step 171: 151470 + 891 = 152361
Step 172: 152361 + 891 = 153252
Step 173: 153252 + 891 = 154143
Step 174: 154143 + 891 = 155034
Step 175: 155034 + 891 = 155925
Step 176: 155925 + 891 = 156816
Step 177: 156816 + 891 = 157707
Step 178: 157707 + 891 = 158598
Step 179: 158598 + 891 = 159489
Step 180: 159489 + 891 = 160380
Step 181: 160380 + 891 = 161271
Step 182: 161271 + 891 = 162162
Step 183: 162162 + 891 = 163053
Step 184: 163053 + 891 = 163944
Step 185: 163944 + 891 = 164835
Step 186: 164835 + 891 = 165726
Step 187: 165726 + 891 = 166617
Step 188: 166617 + 891 = 167508
Step 189: 167508 + 891 = 168399
Step 190: 168399 + 891 = 169290
Step 191: 169290 + 891 = 170181
Step 192: 170181 + 891 = 171072
Step 193: 171072 + 891 = 171963
Step 194: 171963 + 891 = 172854
Step 195: 172854 + 891 = 173745
Step 196: 173745 + 891 = 174636
Step 197: 174636 + 891 = 175527
Step 198: 175527 + 891 = 176418
Step 199: 176418 + 891 = 177309
Step 200: 177309 + 891 = 178200
Step 201: 178200 + 891 = 179091
Step 202: 179091 + 891 = 179982
Step 203: 179982 + 891 = 180873
Step 204: 180873 + 891 = 181764
Step 205: 181764 + 891 = 182655
Step 206: 182655 + 891 = 183546
Step 207: 183546 + 891 = 184437
Step 208: 184437 + 891 = 185328
Step 209: 185328 + 891 = 186219
Step 210: 186219 + 891 = 187110
Step 211: 187110 + 891 = 188001
Step 212: 188001 + 891 = 188892
Step 213: 188892 + 891 = 189783
Step 214: 189783 + 891 = 190674
Step 215: 190674 + 891 = 191565
Step 216: 191565 + 891 = 192456
Step 217: 192456 + 891 = 193347
Step 218: 193347 + 891 = 194238
Step 219: 194238 + 891 = 195129
Step 220: 195129 + 891 = 196020
Step 221: 196020 + 891 = 196911
Step 222: 196911 + 891 = 197802
Step 223: 197802 + 891 = 198693
Step 224: 198693 + 891 = 199584
Step 225: 199584 + 891 = 200475
Step 226: 200475 + 891 = 201366
Step 227: 201366 + 891 = 202257
Step 228: 202257 + 891 = 203148
Step 229: 203148 + 891 = 204039
Step 230: 204039 + 891 = 204930
Step 231: 204930 + 891 = 205821
Step 232: 205821 + 891 = 206712
Step 233: 206712 + 891 = 207603
Step 234: 207603 + 891 = 208494

So, 891*234 = 208494