Without delay, let's solve this. We've got 679 and we will be multiplying it by 429, that is, adding 679 to itself 429 times.
Step 1: 0 + 679 = 679
Step 2: 679 + 679 = 1358
Step 3: 1358 + 679 = 2037
Step 4: 2037 + 679 = 2716
Step 5: 2716 + 679 = 3395
Step 6: 3395 + 679 = 4074
Step 7: 4074 + 679 = 4753
Step 8: 4753 + 679 = 5432
Step 9: 5432 + 679 = 6111
Step 10: 6111 + 679 = 6790
Step 11: 6790 + 679 = 7469
Step 12: 7469 + 679 = 8148
Step 13: 8148 + 679 = 8827
Step 14: 8827 + 679 = 9506
Step 15: 9506 + 679 = 10185
Step 16: 10185 + 679 = 10864
Step 17: 10864 + 679 = 11543
Step 18: 11543 + 679 = 12222
Step 19: 12222 + 679 = 12901
Step 20: 12901 + 679 = 13580
Step 21: 13580 + 679 = 14259
Step 22: 14259 + 679 = 14938
Step 23: 14938 + 679 = 15617
Step 24: 15617 + 679 = 16296
Step 25: 16296 + 679 = 16975
Step 26: 16975 + 679 = 17654
Step 27: 17654 + 679 = 18333
Step 28: 18333 + 679 = 19012
Step 29: 19012 + 679 = 19691
Step 30: 19691 + 679 = 20370
Step 31: 20370 + 679 = 21049
Step 32: 21049 + 679 = 21728
Step 33: 21728 + 679 = 22407
Step 34: 22407 + 679 = 23086
Step 35: 23086 + 679 = 23765
Step 36: 23765 + 679 = 24444
Step 37: 24444 + 679 = 25123
Step 38: 25123 + 679 = 25802
Step 39: 25802 + 679 = 26481
Step 40: 26481 + 679 = 27160
Step 41: 27160 + 679 = 27839
Step 42: 27839 + 679 = 28518
Step 43: 28518 + 679 = 29197
Step 44: 29197 + 679 = 29876
Step 45: 29876 + 679 = 30555
Step 46: 30555 + 679 = 31234
Step 47: 31234 + 679 = 31913
Step 48: 31913 + 679 = 32592
Step 49: 32592 + 679 = 33271
Step 50: 33271 + 679 = 33950
Step 51: 33950 + 679 = 34629
Step 52: 34629 + 679 = 35308
Step 53: 35308 + 679 = 35987
Step 54: 35987 + 679 = 36666
Step 55: 36666 + 679 = 37345
Step 56: 37345 + 679 = 38024
Step 57: 38024 + 679 = 38703
Step 58: 38703 + 679 = 39382
Step 59: 39382 + 679 = 40061
Step 60: 40061 + 679 = 40740
Step 61: 40740 + 679 = 41419
Step 62: 41419 + 679 = 42098
Step 63: 42098 + 679 = 42777
Step 64: 42777 + 679 = 43456
Step 65: 43456 + 679 = 44135
Step 66: 44135 + 679 = 44814
Step 67: 44814 + 679 = 45493
Step 68: 45493 + 679 = 46172
Step 69: 46172 + 679 = 46851
Step 70: 46851 + 679 = 47530
Step 71: 47530 + 679 = 48209
Step 72: 48209 + 679 = 48888
Step 73: 48888 + 679 = 49567
Step 74: 49567 + 679 = 50246
Step 75: 50246 + 679 = 50925
Step 76: 50925 + 679 = 51604
Step 77: 51604 + 679 = 52283
Step 78: 52283 + 679 = 52962
Step 79: 52962 + 679 = 53641
Step 80: 53641 + 679 = 54320
Step 81: 54320 + 679 = 54999
Step 82: 54999 + 679 = 55678
Step 83: 55678 + 679 = 56357
Step 84: 56357 + 679 = 57036
Step 85: 57036 + 679 = 57715
Step 86: 57715 + 679 = 58394
Step 87: 58394 + 679 = 59073
Step 88: 59073 + 679 = 59752
Step 89: 59752 + 679 = 60431
Step 90: 60431 + 679 = 61110
Step 91: 61110 + 679 = 61789
Step 92: 61789 + 679 = 62468
Step 93: 62468 + 679 = 63147
Step 94: 63147 + 679 = 63826
Step 95: 63826 + 679 = 64505
Step 96: 64505 + 679 = 65184
Step 97: 65184 + 679 = 65863
Step 98: 65863 + 679 = 66542
Step 99: 66542 + 679 = 67221
Step 100: 67221 + 679 = 67900
Step 101: 67900 + 679 = 68579
Step 102: 68579 + 679 = 69258
Step 103: 69258 + 679 = 69937
Step 104: 69937 + 679 = 70616
Step 105: 70616 + 679 = 71295
Step 106: 71295 + 679 = 71974
Step 107: 71974 + 679 = 72653
Step 108: 72653 + 679 = 73332
Step 109: 73332 + 679 = 74011
Step 110: 74011 + 679 = 74690
Step 111: 74690 + 679 = 75369
Step 112: 75369 + 679 = 76048
Step 113: 76048 + 679 = 76727
Step 114: 76727 + 679 = 77406
Step 115: 77406 + 679 = 78085
Step 116: 78085 + 679 = 78764
Step 117: 78764 + 679 = 79443
Step 118: 79443 + 679 = 80122
Step 119: 80122 + 679 = 80801
Step 120: 80801 + 679 = 81480
Step 121: 81480 + 679 = 82159
Step 122: 82159 + 679 = 82838
Step 123: 82838 + 679 = 83517
Step 124: 83517 + 679 = 84196
Step 125: 84196 + 679 = 84875
Step 126: 84875 + 679 = 85554
Step 127: 85554 + 679 = 86233
Step 128: 86233 + 679 = 86912
Step 129: 86912 + 679 = 87591
Step 130: 87591 + 679 = 88270
Step 131: 88270 + 679 = 88949
Step 132: 88949 + 679 = 89628
Step 133: 89628 + 679 = 90307
Step 134: 90307 + 679 = 90986
Step 135: 90986 + 679 = 91665
Step 136: 91665 + 679 = 92344
Step 137: 92344 + 679 = 93023
Step 138: 93023 + 679 = 93702
Step 139: 93702 + 679 = 94381
Step 140: 94381 + 679 = 95060
Step 141: 95060 + 679 = 95739
Step 142: 95739 + 679 = 96418
Step 143: 96418 + 679 = 97097
Step 144: 97097 + 679 = 97776
Step 145: 97776 + 679 = 98455
Step 146: 98455 + 679 = 99134
Step 147: 99134 + 679 = 99813
Step 148: 99813 + 679 = 100492
Step 149: 100492 + 679 = 101171
Step 150: 101171 + 679 = 101850
Step 151: 101850 + 679 = 102529
Step 152: 102529 + 679 = 103208
Step 153: 103208 + 679 = 103887
Step 154: 103887 + 679 = 104566
Step 155: 104566 + 679 = 105245
Step 156: 105245 + 679 = 105924
Step 157: 105924 + 679 = 106603
Step 158: 106603 + 679 = 107282
Step 159: 107282 + 679 = 107961
Step 160: 107961 + 679 = 108640
Step 161: 108640 + 679 = 109319
Step 162: 109319 + 679 = 109998
Step 163: 109998 + 679 = 110677
Step 164: 110677 + 679 = 111356
Step 165: 111356 + 679 = 112035
Step 166: 112035 + 679 = 112714
Step 167: 112714 + 679 = 113393
Step 168: 113393 + 679 = 114072
Step 169: 114072 + 679 = 114751
Step 170: 114751 + 679 = 115430
Step 171: 115430 + 679 = 116109
Step 172: 116109 + 679 = 116788
Step 173: 116788 + 679 = 117467
Step 174: 117467 + 679 = 118146
Step 175: 118146 + 679 = 118825
Step 176: 118825 + 679 = 119504
Step 177: 119504 + 679 = 120183
Step 178: 120183 + 679 = 120862
Step 179: 120862 + 679 = 121541
Step 180: 121541 + 679 = 122220
Step 181: 122220 + 679 = 122899
Step 182: 122899 + 679 = 123578
Step 183: 123578 + 679 = 124257
Step 184: 124257 + 679 = 124936
Step 185: 124936 + 679 = 125615
Step 186: 125615 + 679 = 126294
Step 187: 126294 + 679 = 126973
Step 188: 126973 + 679 = 127652
Step 189: 127652 + 679 = 128331
Step 190: 128331 + 679 = 129010
Step 191: 129010 + 679 = 129689
Step 192: 129689 + 679 = 130368
Step 193: 130368 + 679 = 131047
Step 194: 131047 + 679 = 131726
Step 195: 131726 + 679 = 132405
Step 196: 132405 + 679 = 133084
Step 197: 133084 + 679 = 133763
Step 198: 133763 + 679 = 134442
Step 199: 134442 + 679 = 135121
Step 200: 135121 + 679 = 135800
Step 201: 135800 + 679 = 136479
Step 202: 136479 + 679 = 137158
Step 203: 137158 + 679 = 137837
Step 204: 137837 + 679 = 138516
Step 205: 138516 + 679 = 139195
Step 206: 139195 + 679 = 139874
Step 207: 139874 + 679 = 140553
Step 208: 140553 + 679 = 141232
Step 209: 141232 + 679 = 141911
Step 210: 141911 + 679 = 142590
Step 211: 142590 + 679 = 143269
Step 212: 143269 + 679 = 143948
Step 213: 143948 + 679 = 144627
Step 214: 144627 + 679 = 145306
Step 215: 145306 + 679 = 145985
Step 216: 145985 + 679 = 146664
Step 217: 146664 + 679 = 147343
Step 218: 147343 + 679 = 148022
Step 219: 148022 + 679 = 148701
Step 220: 148701 + 679 = 149380
Step 221: 149380 + 679 = 150059
Step 222: 150059 + 679 = 150738
Step 223: 150738 + 679 = 151417
Step 224: 151417 + 679 = 152096
Step 225: 152096 + 679 = 152775
Step 226: 152775 + 679 = 153454
Step 227: 153454 + 679 = 154133
Step 228: 154133 + 679 = 154812
Step 229: 154812 + 679 = 155491
Step 230: 155491 + 679 = 156170
Step 231: 156170 + 679 = 156849
Step 232: 156849 + 679 = 157528
Step 233: 157528 + 679 = 158207
Step 234: 158207 + 679 = 158886
Step 235: 158886 + 679 = 159565
Step 236: 159565 + 679 = 160244
Step 237: 160244 + 679 = 160923
Step 238: 160923 + 679 = 161602
Step 239: 161602 + 679 = 162281
Step 240: 162281 + 679 = 162960
Step 241: 162960 + 679 = 163639
Step 242: 163639 + 679 = 164318
Step 243: 164318 + 679 = 164997
Step 244: 164997 + 679 = 165676
Step 245: 165676 + 679 = 166355
Step 246: 166355 + 679 = 167034
Step 247: 167034 + 679 = 167713
Step 248: 167713 + 679 = 168392
Step 249: 168392 + 679 = 169071
Step 250: 169071 + 679 = 169750
Step 251: 169750 + 679 = 170429
Step 252: 170429 + 679 = 171108
Step 253: 171108 + 679 = 171787
Step 254: 171787 + 679 = 172466
Step 255: 172466 + 679 = 173145
Step 256: 173145 + 679 = 173824
Step 257: 173824 + 679 = 174503
Step 258: 174503 + 679 = 175182
Step 259: 175182 + 679 = 175861
Step 260: 175861 + 679 = 176540
Step 261: 176540 + 679 = 177219
Step 262: 177219 + 679 = 177898
Step 263: 177898 + 679 = 178577
Step 264: 178577 + 679 = 179256
Step 265: 179256 + 679 = 179935
Step 266: 179935 + 679 = 180614
Step 267: 180614 + 679 = 181293
Step 268: 181293 + 679 = 181972
Step 269: 181972 + 679 = 182651
Step 270: 182651 + 679 = 183330
Step 271: 183330 + 679 = 184009
Step 272: 184009 + 679 = 184688
Step 273: 184688 + 679 = 185367
Step 274: 185367 + 679 = 186046
Step 275: 186046 + 679 = 186725
Step 276: 186725 + 679 = 187404
Step 277: 187404 + 679 = 188083
Step 278: 188083 + 679 = 188762
Step 279: 188762 + 679 = 189441
Step 280: 189441 + 679 = 190120
Step 281: 190120 + 679 = 190799
Step 282: 190799 + 679 = 191478
Step 283: 191478 + 679 = 192157
Step 284: 192157 + 679 = 192836
Step 285: 192836 + 679 = 193515
Step 286: 193515 + 679 = 194194
Step 287: 194194 + 679 = 194873
Step 288: 194873 + 679 = 195552
Step 289: 195552 + 679 = 196231
Step 290: 196231 + 679 = 196910
Step 291: 196910 + 679 = 197589
Step 292: 197589 + 679 = 198268
Step 293: 198268 + 679 = 198947
Step 294: 198947 + 679 = 199626
Step 295: 199626 + 679 = 200305
Step 296: 200305 + 679 = 200984
Step 297: 200984 + 679 = 201663
Step 298: 201663 + 679 = 202342
Step 299: 202342 + 679 = 203021
Step 300: 203021 + 679 = 203700
Step 301: 203700 + 679 = 204379
Step 302: 204379 + 679 = 205058
Step 303: 205058 + 679 = 205737
Step 304: 205737 + 679 = 206416
Step 305: 206416 + 679 = 207095
Step 306: 207095 + 679 = 207774
Step 307: 207774 + 679 = 208453
Step 308: 208453 + 679 = 209132
Step 309: 209132 + 679 = 209811
Step 310: 209811 + 679 = 210490
Step 311: 210490 + 679 = 211169
Step 312: 211169 + 679 = 211848
Step 313: 211848 + 679 = 212527
Step 314: 212527 + 679 = 213206
Step 315: 213206 + 679 = 213885
Step 316: 213885 + 679 = 214564
Step 317: 214564 + 679 = 215243
Step 318: 215243 + 679 = 215922
Step 319: 215922 + 679 = 216601
Step 320: 216601 + 679 = 217280
Step 321: 217280 + 679 = 217959
Step 322: 217959 + 679 = 218638
Step 323: 218638 + 679 = 219317
Step 324: 219317 + 679 = 219996
Step 325: 219996 + 679 = 220675
Step 326: 220675 + 679 = 221354
Step 327: 221354 + 679 = 222033
Step 328: 222033 + 679 = 222712
Step 329: 222712 + 679 = 223391
Step 330: 223391 + 679 = 224070
Step 331: 224070 + 679 = 224749
Step 332: 224749 + 679 = 225428
Step 333: 225428 + 679 = 226107
Step 334: 226107 + 679 = 226786
Step 335: 226786 + 679 = 227465
Step 336: 227465 + 679 = 228144
Step 337: 228144 + 679 = 228823
Step 338: 228823 + 679 = 229502
Step 339: 229502 + 679 = 230181
Step 340: 230181 + 679 = 230860
Step 341: 230860 + 679 = 231539
Step 342: 231539 + 679 = 232218
Step 343: 232218 + 679 = 232897
Step 344: 232897 + 679 = 233576
Step 345: 233576 + 679 = 234255
Step 346: 234255 + 679 = 234934
Step 347: 234934 + 679 = 235613
Step 348: 235613 + 679 = 236292
Step 349: 236292 + 679 = 236971
Step 350: 236971 + 679 = 237650
Step 351: 237650 + 679 = 238329
Step 352: 238329 + 679 = 239008
Step 353: 239008 + 679 = 239687
Step 354: 239687 + 679 = 240366
Step 355: 240366 + 679 = 241045
Step 356: 241045 + 679 = 241724
Step 357: 241724 + 679 = 242403
Step 358: 242403 + 679 = 243082
Step 359: 243082 + 679 = 243761
Step 360: 243761 + 679 = 244440
Step 361: 244440 + 679 = 245119
Step 362: 245119 + 679 = 245798
Step 363: 245798 + 679 = 246477
Step 364: 246477 + 679 = 247156
Step 365: 247156 + 679 = 247835
Step 366: 247835 + 679 = 248514
Step 367: 248514 + 679 = 249193
Step 368: 249193 + 679 = 249872
Step 369: 249872 + 679 = 250551
Step 370: 250551 + 679 = 251230
Step 371: 251230 + 679 = 251909
Step 372: 251909 + 679 = 252588
Step 373: 252588 + 679 = 253267
Step 374: 253267 + 679 = 253946
Step 375: 253946 + 679 = 254625
Step 376: 254625 + 679 = 255304
Step 377: 255304 + 679 = 255983
Step 378: 255983 + 679 = 256662
Step 379: 256662 + 679 = 257341
Step 380: 257341 + 679 = 258020
Step 381: 258020 + 679 = 258699
Step 382: 258699 + 679 = 259378
Step 383: 259378 + 679 = 260057
Step 384: 260057 + 679 = 260736
Step 385: 260736 + 679 = 261415
Step 386: 261415 + 679 = 262094
Step 387: 262094 + 679 = 262773
Step 388: 262773 + 679 = 263452
Step 389: 263452 + 679 = 264131
Step 390: 264131 + 679 = 264810
Step 391: 264810 + 679 = 265489
Step 392: 265489 + 679 = 266168
Step 393: 266168 + 679 = 266847
Step 394: 266847 + 679 = 267526
Step 395: 267526 + 679 = 268205
Step 396: 268205 + 679 = 268884
Step 397: 268884 + 679 = 269563
Step 398: 269563 + 679 = 270242
Step 399: 270242 + 679 = 270921
Step 400: 270921 + 679 = 271600
Step 401: 271600 + 679 = 272279
Step 402: 272279 + 679 = 272958
Step 403: 272958 + 679 = 273637
Step 404: 273637 + 679 = 274316
Step 405: 274316 + 679 = 274995
Step 406: 274995 + 679 = 275674
Step 407: 275674 + 679 = 276353
Step 408: 276353 + 679 = 277032
Step 409: 277032 + 679 = 277711
Step 410: 277711 + 679 = 278390
Step 411: 278390 + 679 = 279069
Step 412: 279069 + 679 = 279748
Step 413: 279748 + 679 = 280427
Step 414: 280427 + 679 = 281106
Step 415: 281106 + 679 = 281785
Step 416: 281785 + 679 = 282464
Step 417: 282464 + 679 = 283143
Step 418: 283143 + 679 = 283822
Step 419: 283822 + 679 = 284501
Step 420: 284501 + 679 = 285180
Step 421: 285180 + 679 = 285859
Step 422: 285859 + 679 = 286538
Step 423: 286538 + 679 = 287217
Step 424: 287217 + 679 = 287896
Step 425: 287896 + 679 = 288575
Step 426: 288575 + 679 = 289254
Step 427: 289254 + 679 = 289933
Step 428: 289933 + 679 = 290612
Step 429: 290612 + 679 = 291291

So, 679*429 = 291291