Without delay, let's solve this. We've got 674 and we will be multiplying it by 406, that is, adding 674 to itself 406 times.
Step 1: 0 + 674 = 674
Step 2: 674 + 674 = 1348
Step 3: 1348 + 674 = 2022
Step 4: 2022 + 674 = 2696
Step 5: 2696 + 674 = 3370
Step 6: 3370 + 674 = 4044
Step 7: 4044 + 674 = 4718
Step 8: 4718 + 674 = 5392
Step 9: 5392 + 674 = 6066
Step 10: 6066 + 674 = 6740
Step 11: 6740 + 674 = 7414
Step 12: 7414 + 674 = 8088
Step 13: 8088 + 674 = 8762
Step 14: 8762 + 674 = 9436
Step 15: 9436 + 674 = 10110
Step 16: 10110 + 674 = 10784
Step 17: 10784 + 674 = 11458
Step 18: 11458 + 674 = 12132
Step 19: 12132 + 674 = 12806
Step 20: 12806 + 674 = 13480
Step 21: 13480 + 674 = 14154
Step 22: 14154 + 674 = 14828
Step 23: 14828 + 674 = 15502
Step 24: 15502 + 674 = 16176
Step 25: 16176 + 674 = 16850
Step 26: 16850 + 674 = 17524
Step 27: 17524 + 674 = 18198
Step 28: 18198 + 674 = 18872
Step 29: 18872 + 674 = 19546
Step 30: 19546 + 674 = 20220
Step 31: 20220 + 674 = 20894
Step 32: 20894 + 674 = 21568
Step 33: 21568 + 674 = 22242
Step 34: 22242 + 674 = 22916
Step 35: 22916 + 674 = 23590
Step 36: 23590 + 674 = 24264
Step 37: 24264 + 674 = 24938
Step 38: 24938 + 674 = 25612
Step 39: 25612 + 674 = 26286
Step 40: 26286 + 674 = 26960
Step 41: 26960 + 674 = 27634
Step 42: 27634 + 674 = 28308
Step 43: 28308 + 674 = 28982
Step 44: 28982 + 674 = 29656
Step 45: 29656 + 674 = 30330
Step 46: 30330 + 674 = 31004
Step 47: 31004 + 674 = 31678
Step 48: 31678 + 674 = 32352
Step 49: 32352 + 674 = 33026
Step 50: 33026 + 674 = 33700
Step 51: 33700 + 674 = 34374
Step 52: 34374 + 674 = 35048
Step 53: 35048 + 674 = 35722
Step 54: 35722 + 674 = 36396
Step 55: 36396 + 674 = 37070
Step 56: 37070 + 674 = 37744
Step 57: 37744 + 674 = 38418
Step 58: 38418 + 674 = 39092
Step 59: 39092 + 674 = 39766
Step 60: 39766 + 674 = 40440
Step 61: 40440 + 674 = 41114
Step 62: 41114 + 674 = 41788
Step 63: 41788 + 674 = 42462
Step 64: 42462 + 674 = 43136
Step 65: 43136 + 674 = 43810
Step 66: 43810 + 674 = 44484
Step 67: 44484 + 674 = 45158
Step 68: 45158 + 674 = 45832
Step 69: 45832 + 674 = 46506
Step 70: 46506 + 674 = 47180
Step 71: 47180 + 674 = 47854
Step 72: 47854 + 674 = 48528
Step 73: 48528 + 674 = 49202
Step 74: 49202 + 674 = 49876
Step 75: 49876 + 674 = 50550
Step 76: 50550 + 674 = 51224
Step 77: 51224 + 674 = 51898
Step 78: 51898 + 674 = 52572
Step 79: 52572 + 674 = 53246
Step 80: 53246 + 674 = 53920
Step 81: 53920 + 674 = 54594
Step 82: 54594 + 674 = 55268
Step 83: 55268 + 674 = 55942
Step 84: 55942 + 674 = 56616
Step 85: 56616 + 674 = 57290
Step 86: 57290 + 674 = 57964
Step 87: 57964 + 674 = 58638
Step 88: 58638 + 674 = 59312
Step 89: 59312 + 674 = 59986
Step 90: 59986 + 674 = 60660
Step 91: 60660 + 674 = 61334
Step 92: 61334 + 674 = 62008
Step 93: 62008 + 674 = 62682
Step 94: 62682 + 674 = 63356
Step 95: 63356 + 674 = 64030
Step 96: 64030 + 674 = 64704
Step 97: 64704 + 674 = 65378
Step 98: 65378 + 674 = 66052
Step 99: 66052 + 674 = 66726
Step 100: 66726 + 674 = 67400
Step 101: 67400 + 674 = 68074
Step 102: 68074 + 674 = 68748
Step 103: 68748 + 674 = 69422
Step 104: 69422 + 674 = 70096
Step 105: 70096 + 674 = 70770
Step 106: 70770 + 674 = 71444
Step 107: 71444 + 674 = 72118
Step 108: 72118 + 674 = 72792
Step 109: 72792 + 674 = 73466
Step 110: 73466 + 674 = 74140
Step 111: 74140 + 674 = 74814
Step 112: 74814 + 674 = 75488
Step 113: 75488 + 674 = 76162
Step 114: 76162 + 674 = 76836
Step 115: 76836 + 674 = 77510
Step 116: 77510 + 674 = 78184
Step 117: 78184 + 674 = 78858
Step 118: 78858 + 674 = 79532
Step 119: 79532 + 674 = 80206
Step 120: 80206 + 674 = 80880
Step 121: 80880 + 674 = 81554
Step 122: 81554 + 674 = 82228
Step 123: 82228 + 674 = 82902
Step 124: 82902 + 674 = 83576
Step 125: 83576 + 674 = 84250
Step 126: 84250 + 674 = 84924
Step 127: 84924 + 674 = 85598
Step 128: 85598 + 674 = 86272
Step 129: 86272 + 674 = 86946
Step 130: 86946 + 674 = 87620
Step 131: 87620 + 674 = 88294
Step 132: 88294 + 674 = 88968
Step 133: 88968 + 674 = 89642
Step 134: 89642 + 674 = 90316
Step 135: 90316 + 674 = 90990
Step 136: 90990 + 674 = 91664
Step 137: 91664 + 674 = 92338
Step 138: 92338 + 674 = 93012
Step 139: 93012 + 674 = 93686
Step 140: 93686 + 674 = 94360
Step 141: 94360 + 674 = 95034
Step 142: 95034 + 674 = 95708
Step 143: 95708 + 674 = 96382
Step 144: 96382 + 674 = 97056
Step 145: 97056 + 674 = 97730
Step 146: 97730 + 674 = 98404
Step 147: 98404 + 674 = 99078
Step 148: 99078 + 674 = 99752
Step 149: 99752 + 674 = 100426
Step 150: 100426 + 674 = 101100
Step 151: 101100 + 674 = 101774
Step 152: 101774 + 674 = 102448
Step 153: 102448 + 674 = 103122
Step 154: 103122 + 674 = 103796
Step 155: 103796 + 674 = 104470
Step 156: 104470 + 674 = 105144
Step 157: 105144 + 674 = 105818
Step 158: 105818 + 674 = 106492
Step 159: 106492 + 674 = 107166
Step 160: 107166 + 674 = 107840
Step 161: 107840 + 674 = 108514
Step 162: 108514 + 674 = 109188
Step 163: 109188 + 674 = 109862
Step 164: 109862 + 674 = 110536
Step 165: 110536 + 674 = 111210
Step 166: 111210 + 674 = 111884
Step 167: 111884 + 674 = 112558
Step 168: 112558 + 674 = 113232
Step 169: 113232 + 674 = 113906
Step 170: 113906 + 674 = 114580
Step 171: 114580 + 674 = 115254
Step 172: 115254 + 674 = 115928
Step 173: 115928 + 674 = 116602
Step 174: 116602 + 674 = 117276
Step 175: 117276 + 674 = 117950
Step 176: 117950 + 674 = 118624
Step 177: 118624 + 674 = 119298
Step 178: 119298 + 674 = 119972
Step 179: 119972 + 674 = 120646
Step 180: 120646 + 674 = 121320
Step 181: 121320 + 674 = 121994
Step 182: 121994 + 674 = 122668
Step 183: 122668 + 674 = 123342
Step 184: 123342 + 674 = 124016
Step 185: 124016 + 674 = 124690
Step 186: 124690 + 674 = 125364
Step 187: 125364 + 674 = 126038
Step 188: 126038 + 674 = 126712
Step 189: 126712 + 674 = 127386
Step 190: 127386 + 674 = 128060
Step 191: 128060 + 674 = 128734
Step 192: 128734 + 674 = 129408
Step 193: 129408 + 674 = 130082
Step 194: 130082 + 674 = 130756
Step 195: 130756 + 674 = 131430
Step 196: 131430 + 674 = 132104
Step 197: 132104 + 674 = 132778
Step 198: 132778 + 674 = 133452
Step 199: 133452 + 674 = 134126
Step 200: 134126 + 674 = 134800
Step 201: 134800 + 674 = 135474
Step 202: 135474 + 674 = 136148
Step 203: 136148 + 674 = 136822
Step 204: 136822 + 674 = 137496
Step 205: 137496 + 674 = 138170
Step 206: 138170 + 674 = 138844
Step 207: 138844 + 674 = 139518
Step 208: 139518 + 674 = 140192
Step 209: 140192 + 674 = 140866
Step 210: 140866 + 674 = 141540
Step 211: 141540 + 674 = 142214
Step 212: 142214 + 674 = 142888
Step 213: 142888 + 674 = 143562
Step 214: 143562 + 674 = 144236
Step 215: 144236 + 674 = 144910
Step 216: 144910 + 674 = 145584
Step 217: 145584 + 674 = 146258
Step 218: 146258 + 674 = 146932
Step 219: 146932 + 674 = 147606
Step 220: 147606 + 674 = 148280
Step 221: 148280 + 674 = 148954
Step 222: 148954 + 674 = 149628
Step 223: 149628 + 674 = 150302
Step 224: 150302 + 674 = 150976
Step 225: 150976 + 674 = 151650
Step 226: 151650 + 674 = 152324
Step 227: 152324 + 674 = 152998
Step 228: 152998 + 674 = 153672
Step 229: 153672 + 674 = 154346
Step 230: 154346 + 674 = 155020
Step 231: 155020 + 674 = 155694
Step 232: 155694 + 674 = 156368
Step 233: 156368 + 674 = 157042
Step 234: 157042 + 674 = 157716
Step 235: 157716 + 674 = 158390
Step 236: 158390 + 674 = 159064
Step 237: 159064 + 674 = 159738
Step 238: 159738 + 674 = 160412
Step 239: 160412 + 674 = 161086
Step 240: 161086 + 674 = 161760
Step 241: 161760 + 674 = 162434
Step 242: 162434 + 674 = 163108
Step 243: 163108 + 674 = 163782
Step 244: 163782 + 674 = 164456
Step 245: 164456 + 674 = 165130
Step 246: 165130 + 674 = 165804
Step 247: 165804 + 674 = 166478
Step 248: 166478 + 674 = 167152
Step 249: 167152 + 674 = 167826
Step 250: 167826 + 674 = 168500
Step 251: 168500 + 674 = 169174
Step 252: 169174 + 674 = 169848
Step 253: 169848 + 674 = 170522
Step 254: 170522 + 674 = 171196
Step 255: 171196 + 674 = 171870
Step 256: 171870 + 674 = 172544
Step 257: 172544 + 674 = 173218
Step 258: 173218 + 674 = 173892
Step 259: 173892 + 674 = 174566
Step 260: 174566 + 674 = 175240
Step 261: 175240 + 674 = 175914
Step 262: 175914 + 674 = 176588
Step 263: 176588 + 674 = 177262
Step 264: 177262 + 674 = 177936
Step 265: 177936 + 674 = 178610
Step 266: 178610 + 674 = 179284
Step 267: 179284 + 674 = 179958
Step 268: 179958 + 674 = 180632
Step 269: 180632 + 674 = 181306
Step 270: 181306 + 674 = 181980
Step 271: 181980 + 674 = 182654
Step 272: 182654 + 674 = 183328
Step 273: 183328 + 674 = 184002
Step 274: 184002 + 674 = 184676
Step 275: 184676 + 674 = 185350
Step 276: 185350 + 674 = 186024
Step 277: 186024 + 674 = 186698
Step 278: 186698 + 674 = 187372
Step 279: 187372 + 674 = 188046
Step 280: 188046 + 674 = 188720
Step 281: 188720 + 674 = 189394
Step 282: 189394 + 674 = 190068
Step 283: 190068 + 674 = 190742
Step 284: 190742 + 674 = 191416
Step 285: 191416 + 674 = 192090
Step 286: 192090 + 674 = 192764
Step 287: 192764 + 674 = 193438
Step 288: 193438 + 674 = 194112
Step 289: 194112 + 674 = 194786
Step 290: 194786 + 674 = 195460
Step 291: 195460 + 674 = 196134
Step 292: 196134 + 674 = 196808
Step 293: 196808 + 674 = 197482
Step 294: 197482 + 674 = 198156
Step 295: 198156 + 674 = 198830
Step 296: 198830 + 674 = 199504
Step 297: 199504 + 674 = 200178
Step 298: 200178 + 674 = 200852
Step 299: 200852 + 674 = 201526
Step 300: 201526 + 674 = 202200
Step 301: 202200 + 674 = 202874
Step 302: 202874 + 674 = 203548
Step 303: 203548 + 674 = 204222
Step 304: 204222 + 674 = 204896
Step 305: 204896 + 674 = 205570
Step 306: 205570 + 674 = 206244
Step 307: 206244 + 674 = 206918
Step 308: 206918 + 674 = 207592
Step 309: 207592 + 674 = 208266
Step 310: 208266 + 674 = 208940
Step 311: 208940 + 674 = 209614
Step 312: 209614 + 674 = 210288
Step 313: 210288 + 674 = 210962
Step 314: 210962 + 674 = 211636
Step 315: 211636 + 674 = 212310
Step 316: 212310 + 674 = 212984
Step 317: 212984 + 674 = 213658
Step 318: 213658 + 674 = 214332
Step 319: 214332 + 674 = 215006
Step 320: 215006 + 674 = 215680
Step 321: 215680 + 674 = 216354
Step 322: 216354 + 674 = 217028
Step 323: 217028 + 674 = 217702
Step 324: 217702 + 674 = 218376
Step 325: 218376 + 674 = 219050
Step 326: 219050 + 674 = 219724
Step 327: 219724 + 674 = 220398
Step 328: 220398 + 674 = 221072
Step 329: 221072 + 674 = 221746
Step 330: 221746 + 674 = 222420
Step 331: 222420 + 674 = 223094
Step 332: 223094 + 674 = 223768
Step 333: 223768 + 674 = 224442
Step 334: 224442 + 674 = 225116
Step 335: 225116 + 674 = 225790
Step 336: 225790 + 674 = 226464
Step 337: 226464 + 674 = 227138
Step 338: 227138 + 674 = 227812
Step 339: 227812 + 674 = 228486
Step 340: 228486 + 674 = 229160
Step 341: 229160 + 674 = 229834
Step 342: 229834 + 674 = 230508
Step 343: 230508 + 674 = 231182
Step 344: 231182 + 674 = 231856
Step 345: 231856 + 674 = 232530
Step 346: 232530 + 674 = 233204
Step 347: 233204 + 674 = 233878
Step 348: 233878 + 674 = 234552
Step 349: 234552 + 674 = 235226
Step 350: 235226 + 674 = 235900
Step 351: 235900 + 674 = 236574
Step 352: 236574 + 674 = 237248
Step 353: 237248 + 674 = 237922
Step 354: 237922 + 674 = 238596
Step 355: 238596 + 674 = 239270
Step 356: 239270 + 674 = 239944
Step 357: 239944 + 674 = 240618
Step 358: 240618 + 674 = 241292
Step 359: 241292 + 674 = 241966
Step 360: 241966 + 674 = 242640
Step 361: 242640 + 674 = 243314
Step 362: 243314 + 674 = 243988
Step 363: 243988 + 674 = 244662
Step 364: 244662 + 674 = 245336
Step 365: 245336 + 674 = 246010
Step 366: 246010 + 674 = 246684
Step 367: 246684 + 674 = 247358
Step 368: 247358 + 674 = 248032
Step 369: 248032 + 674 = 248706
Step 370: 248706 + 674 = 249380
Step 371: 249380 + 674 = 250054
Step 372: 250054 + 674 = 250728
Step 373: 250728 + 674 = 251402
Step 374: 251402 + 674 = 252076
Step 375: 252076 + 674 = 252750
Step 376: 252750 + 674 = 253424
Step 377: 253424 + 674 = 254098
Step 378: 254098 + 674 = 254772
Step 379: 254772 + 674 = 255446
Step 380: 255446 + 674 = 256120
Step 381: 256120 + 674 = 256794
Step 382: 256794 + 674 = 257468
Step 383: 257468 + 674 = 258142
Step 384: 258142 + 674 = 258816
Step 385: 258816 + 674 = 259490
Step 386: 259490 + 674 = 260164
Step 387: 260164 + 674 = 260838
Step 388: 260838 + 674 = 261512
Step 389: 261512 + 674 = 262186
Step 390: 262186 + 674 = 262860
Step 391: 262860 + 674 = 263534
Step 392: 263534 + 674 = 264208
Step 393: 264208 + 674 = 264882
Step 394: 264882 + 674 = 265556
Step 395: 265556 + 674 = 266230
Step 396: 266230 + 674 = 266904
Step 397: 266904 + 674 = 267578
Step 398: 267578 + 674 = 268252
Step 399: 268252 + 674 = 268926
Step 400: 268926 + 674 = 269600
Step 401: 269600 + 674 = 270274
Step 402: 270274 + 674 = 270948
Step 403: 270948 + 674 = 271622
Step 404: 271622 + 674 = 272296
Step 405: 272296 + 674 = 272970
Step 406: 272970 + 674 = 273644

So, 674*406 = 273644