Alright, let's solve this math problem step by step. First, we have the number 669. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 431. So, we're going to take the number 669 and add it to itself 431 times.
Step 1: 0 + 669 = 669
Step 2: 669 + 669 = 1338
Step 3: 1338 + 669 = 2007
Step 4: 2007 + 669 = 2676
Step 5: 2676 + 669 = 3345
Step 6: 3345 + 669 = 4014
Step 7: 4014 + 669 = 4683
Step 8: 4683 + 669 = 5352
Step 9: 5352 + 669 = 6021
Step 10: 6021 + 669 = 6690
Step 11: 6690 + 669 = 7359
Step 12: 7359 + 669 = 8028
Step 13: 8028 + 669 = 8697
Step 14: 8697 + 669 = 9366
Step 15: 9366 + 669 = 10035
Step 16: 10035 + 669 = 10704
Step 17: 10704 + 669 = 11373
Step 18: 11373 + 669 = 12042
Step 19: 12042 + 669 = 12711
Step 20: 12711 + 669 = 13380
Step 21: 13380 + 669 = 14049
Step 22: 14049 + 669 = 14718
Step 23: 14718 + 669 = 15387
Step 24: 15387 + 669 = 16056
Step 25: 16056 + 669 = 16725
Step 26: 16725 + 669 = 17394
Step 27: 17394 + 669 = 18063
Step 28: 18063 + 669 = 18732
Step 29: 18732 + 669 = 19401
Step 30: 19401 + 669 = 20070
Step 31: 20070 + 669 = 20739
Step 32: 20739 + 669 = 21408
Step 33: 21408 + 669 = 22077
Step 34: 22077 + 669 = 22746
Step 35: 22746 + 669 = 23415
Step 36: 23415 + 669 = 24084
Step 37: 24084 + 669 = 24753
Step 38: 24753 + 669 = 25422
Step 39: 25422 + 669 = 26091
Step 40: 26091 + 669 = 26760
Step 41: 26760 + 669 = 27429
Step 42: 27429 + 669 = 28098
Step 43: 28098 + 669 = 28767
Step 44: 28767 + 669 = 29436
Step 45: 29436 + 669 = 30105
Step 46: 30105 + 669 = 30774
Step 47: 30774 + 669 = 31443
Step 48: 31443 + 669 = 32112
Step 49: 32112 + 669 = 32781
Step 50: 32781 + 669 = 33450
Step 51: 33450 + 669 = 34119
Step 52: 34119 + 669 = 34788
Step 53: 34788 + 669 = 35457
Step 54: 35457 + 669 = 36126
Step 55: 36126 + 669 = 36795
Step 56: 36795 + 669 = 37464
Step 57: 37464 + 669 = 38133
Step 58: 38133 + 669 = 38802
Step 59: 38802 + 669 = 39471
Step 60: 39471 + 669 = 40140
Step 61: 40140 + 669 = 40809
Step 62: 40809 + 669 = 41478
Step 63: 41478 + 669 = 42147
Step 64: 42147 + 669 = 42816
Step 65: 42816 + 669 = 43485
Step 66: 43485 + 669 = 44154
Step 67: 44154 + 669 = 44823
Step 68: 44823 + 669 = 45492
Step 69: 45492 + 669 = 46161
Step 70: 46161 + 669 = 46830
Step 71: 46830 + 669 = 47499
Step 72: 47499 + 669 = 48168
Step 73: 48168 + 669 = 48837
Step 74: 48837 + 669 = 49506
Step 75: 49506 + 669 = 50175
Step 76: 50175 + 669 = 50844
Step 77: 50844 + 669 = 51513
Step 78: 51513 + 669 = 52182
Step 79: 52182 + 669 = 52851
Step 80: 52851 + 669 = 53520
Step 81: 53520 + 669 = 54189
Step 82: 54189 + 669 = 54858
Step 83: 54858 + 669 = 55527
Step 84: 55527 + 669 = 56196
Step 85: 56196 + 669 = 56865
Step 86: 56865 + 669 = 57534
Step 87: 57534 + 669 = 58203
Step 88: 58203 + 669 = 58872
Step 89: 58872 + 669 = 59541
Step 90: 59541 + 669 = 60210
Step 91: 60210 + 669 = 60879
Step 92: 60879 + 669 = 61548
Step 93: 61548 + 669 = 62217
Step 94: 62217 + 669 = 62886
Step 95: 62886 + 669 = 63555
Step 96: 63555 + 669 = 64224
Step 97: 64224 + 669 = 64893
Step 98: 64893 + 669 = 65562
Step 99: 65562 + 669 = 66231
Step 100: 66231 + 669 = 66900
Step 101: 66900 + 669 = 67569
Step 102: 67569 + 669 = 68238
Step 103: 68238 + 669 = 68907
Step 104: 68907 + 669 = 69576
Step 105: 69576 + 669 = 70245
Step 106: 70245 + 669 = 70914
Step 107: 70914 + 669 = 71583
Step 108: 71583 + 669 = 72252
Step 109: 72252 + 669 = 72921
Step 110: 72921 + 669 = 73590
Step 111: 73590 + 669 = 74259
Step 112: 74259 + 669 = 74928
Step 113: 74928 + 669 = 75597
Step 114: 75597 + 669 = 76266
Step 115: 76266 + 669 = 76935
Step 116: 76935 + 669 = 77604
Step 117: 77604 + 669 = 78273
Step 118: 78273 + 669 = 78942
Step 119: 78942 + 669 = 79611
Step 120: 79611 + 669 = 80280
Step 121: 80280 + 669 = 80949
Step 122: 80949 + 669 = 81618
Step 123: 81618 + 669 = 82287
Step 124: 82287 + 669 = 82956
Step 125: 82956 + 669 = 83625
Step 126: 83625 + 669 = 84294
Step 127: 84294 + 669 = 84963
Step 128: 84963 + 669 = 85632
Step 129: 85632 + 669 = 86301
Step 130: 86301 + 669 = 86970
Step 131: 86970 + 669 = 87639
Step 132: 87639 + 669 = 88308
Step 133: 88308 + 669 = 88977
Step 134: 88977 + 669 = 89646
Step 135: 89646 + 669 = 90315
Step 136: 90315 + 669 = 90984
Step 137: 90984 + 669 = 91653
Step 138: 91653 + 669 = 92322
Step 139: 92322 + 669 = 92991
Step 140: 92991 + 669 = 93660
Step 141: 93660 + 669 = 94329
Step 142: 94329 + 669 = 94998
Step 143: 94998 + 669 = 95667
Step 144: 95667 + 669 = 96336
Step 145: 96336 + 669 = 97005
Step 146: 97005 + 669 = 97674
Step 147: 97674 + 669 = 98343
Step 148: 98343 + 669 = 99012
Step 149: 99012 + 669 = 99681
Step 150: 99681 + 669 = 100350
Step 151: 100350 + 669 = 101019
Step 152: 101019 + 669 = 101688
Step 153: 101688 + 669 = 102357
Step 154: 102357 + 669 = 103026
Step 155: 103026 + 669 = 103695
Step 156: 103695 + 669 = 104364
Step 157: 104364 + 669 = 105033
Step 158: 105033 + 669 = 105702
Step 159: 105702 + 669 = 106371
Step 160: 106371 + 669 = 107040
Step 161: 107040 + 669 = 107709
Step 162: 107709 + 669 = 108378
Step 163: 108378 + 669 = 109047
Step 164: 109047 + 669 = 109716
Step 165: 109716 + 669 = 110385
Step 166: 110385 + 669 = 111054
Step 167: 111054 + 669 = 111723
Step 168: 111723 + 669 = 112392
Step 169: 112392 + 669 = 113061
Step 170: 113061 + 669 = 113730
Step 171: 113730 + 669 = 114399
Step 172: 114399 + 669 = 115068
Step 173: 115068 + 669 = 115737
Step 174: 115737 + 669 = 116406
Step 175: 116406 + 669 = 117075
Step 176: 117075 + 669 = 117744
Step 177: 117744 + 669 = 118413
Step 178: 118413 + 669 = 119082
Step 179: 119082 + 669 = 119751
Step 180: 119751 + 669 = 120420
Step 181: 120420 + 669 = 121089
Step 182: 121089 + 669 = 121758
Step 183: 121758 + 669 = 122427
Step 184: 122427 + 669 = 123096
Step 185: 123096 + 669 = 123765
Step 186: 123765 + 669 = 124434
Step 187: 124434 + 669 = 125103
Step 188: 125103 + 669 = 125772
Step 189: 125772 + 669 = 126441
Step 190: 126441 + 669 = 127110
Step 191: 127110 + 669 = 127779
Step 192: 127779 + 669 = 128448
Step 193: 128448 + 669 = 129117
Step 194: 129117 + 669 = 129786
Step 195: 129786 + 669 = 130455
Step 196: 130455 + 669 = 131124
Step 197: 131124 + 669 = 131793
Step 198: 131793 + 669 = 132462
Step 199: 132462 + 669 = 133131
Step 200: 133131 + 669 = 133800
Step 201: 133800 + 669 = 134469
Step 202: 134469 + 669 = 135138
Step 203: 135138 + 669 = 135807
Step 204: 135807 + 669 = 136476
Step 205: 136476 + 669 = 137145
Step 206: 137145 + 669 = 137814
Step 207: 137814 + 669 = 138483
Step 208: 138483 + 669 = 139152
Step 209: 139152 + 669 = 139821
Step 210: 139821 + 669 = 140490
Step 211: 140490 + 669 = 141159
Step 212: 141159 + 669 = 141828
Step 213: 141828 + 669 = 142497
Step 214: 142497 + 669 = 143166
Step 215: 143166 + 669 = 143835
Step 216: 143835 + 669 = 144504
Step 217: 144504 + 669 = 145173
Step 218: 145173 + 669 = 145842
Step 219: 145842 + 669 = 146511
Step 220: 146511 + 669 = 147180
Step 221: 147180 + 669 = 147849
Step 222: 147849 + 669 = 148518
Step 223: 148518 + 669 = 149187
Step 224: 149187 + 669 = 149856
Step 225: 149856 + 669 = 150525
Step 226: 150525 + 669 = 151194
Step 227: 151194 + 669 = 151863
Step 228: 151863 + 669 = 152532
Step 229: 152532 + 669 = 153201
Step 230: 153201 + 669 = 153870
Step 231: 153870 + 669 = 154539
Step 232: 154539 + 669 = 155208
Step 233: 155208 + 669 = 155877
Step 234: 155877 + 669 = 156546
Step 235: 156546 + 669 = 157215
Step 236: 157215 + 669 = 157884
Step 237: 157884 + 669 = 158553
Step 238: 158553 + 669 = 159222
Step 239: 159222 + 669 = 159891
Step 240: 159891 + 669 = 160560
Step 241: 160560 + 669 = 161229
Step 242: 161229 + 669 = 161898
Step 243: 161898 + 669 = 162567
Step 244: 162567 + 669 = 163236
Step 245: 163236 + 669 = 163905
Step 246: 163905 + 669 = 164574
Step 247: 164574 + 669 = 165243
Step 248: 165243 + 669 = 165912
Step 249: 165912 + 669 = 166581
Step 250: 166581 + 669 = 167250
Step 251: 167250 + 669 = 167919
Step 252: 167919 + 669 = 168588
Step 253: 168588 + 669 = 169257
Step 254: 169257 + 669 = 169926
Step 255: 169926 + 669 = 170595
Step 256: 170595 + 669 = 171264
Step 257: 171264 + 669 = 171933
Step 258: 171933 + 669 = 172602
Step 259: 172602 + 669 = 173271
Step 260: 173271 + 669 = 173940
Step 261: 173940 + 669 = 174609
Step 262: 174609 + 669 = 175278
Step 263: 175278 + 669 = 175947
Step 264: 175947 + 669 = 176616
Step 265: 176616 + 669 = 177285
Step 266: 177285 + 669 = 177954
Step 267: 177954 + 669 = 178623
Step 268: 178623 + 669 = 179292
Step 269: 179292 + 669 = 179961
Step 270: 179961 + 669 = 180630
Step 271: 180630 + 669 = 181299
Step 272: 181299 + 669 = 181968
Step 273: 181968 + 669 = 182637
Step 274: 182637 + 669 = 183306
Step 275: 183306 + 669 = 183975
Step 276: 183975 + 669 = 184644
Step 277: 184644 + 669 = 185313
Step 278: 185313 + 669 = 185982
Step 279: 185982 + 669 = 186651
Step 280: 186651 + 669 = 187320
Step 281: 187320 + 669 = 187989
Step 282: 187989 + 669 = 188658
Step 283: 188658 + 669 = 189327
Step 284: 189327 + 669 = 189996
Step 285: 189996 + 669 = 190665
Step 286: 190665 + 669 = 191334
Step 287: 191334 + 669 = 192003
Step 288: 192003 + 669 = 192672
Step 289: 192672 + 669 = 193341
Step 290: 193341 + 669 = 194010
Step 291: 194010 + 669 = 194679
Step 292: 194679 + 669 = 195348
Step 293: 195348 + 669 = 196017
Step 294: 196017 + 669 = 196686
Step 295: 196686 + 669 = 197355
Step 296: 197355 + 669 = 198024
Step 297: 198024 + 669 = 198693
Step 298: 198693 + 669 = 199362
Step 299: 199362 + 669 = 200031
Step 300: 200031 + 669 = 200700
Step 301: 200700 + 669 = 201369
Step 302: 201369 + 669 = 202038
Step 303: 202038 + 669 = 202707
Step 304: 202707 + 669 = 203376
Step 305: 203376 + 669 = 204045
Step 306: 204045 + 669 = 204714
Step 307: 204714 + 669 = 205383
Step 308: 205383 + 669 = 206052
Step 309: 206052 + 669 = 206721
Step 310: 206721 + 669 = 207390
Step 311: 207390 + 669 = 208059
Step 312: 208059 + 669 = 208728
Step 313: 208728 + 669 = 209397
Step 314: 209397 + 669 = 210066
Step 315: 210066 + 669 = 210735
Step 316: 210735 + 669 = 211404
Step 317: 211404 + 669 = 212073
Step 318: 212073 + 669 = 212742
Step 319: 212742 + 669 = 213411
Step 320: 213411 + 669 = 214080
Step 321: 214080 + 669 = 214749
Step 322: 214749 + 669 = 215418
Step 323: 215418 + 669 = 216087
Step 324: 216087 + 669 = 216756
Step 325: 216756 + 669 = 217425
Step 326: 217425 + 669 = 218094
Step 327: 218094 + 669 = 218763
Step 328: 218763 + 669 = 219432
Step 329: 219432 + 669 = 220101
Step 330: 220101 + 669 = 220770
Step 331: 220770 + 669 = 221439
Step 332: 221439 + 669 = 222108
Step 333: 222108 + 669 = 222777
Step 334: 222777 + 669 = 223446
Step 335: 223446 + 669 = 224115
Step 336: 224115 + 669 = 224784
Step 337: 224784 + 669 = 225453
Step 338: 225453 + 669 = 226122
Step 339: 226122 + 669 = 226791
Step 340: 226791 + 669 = 227460
Step 341: 227460 + 669 = 228129
Step 342: 228129 + 669 = 228798
Step 343: 228798 + 669 = 229467
Step 344: 229467 + 669 = 230136
Step 345: 230136 + 669 = 230805
Step 346: 230805 + 669 = 231474
Step 347: 231474 + 669 = 232143
Step 348: 232143 + 669 = 232812
Step 349: 232812 + 669 = 233481
Step 350: 233481 + 669 = 234150
Step 351: 234150 + 669 = 234819
Step 352: 234819 + 669 = 235488
Step 353: 235488 + 669 = 236157
Step 354: 236157 + 669 = 236826
Step 355: 236826 + 669 = 237495
Step 356: 237495 + 669 = 238164
Step 357: 238164 + 669 = 238833
Step 358: 238833 + 669 = 239502
Step 359: 239502 + 669 = 240171
Step 360: 240171 + 669 = 240840
Step 361: 240840 + 669 = 241509
Step 362: 241509 + 669 = 242178
Step 363: 242178 + 669 = 242847
Step 364: 242847 + 669 = 243516
Step 365: 243516 + 669 = 244185
Step 366: 244185 + 669 = 244854
Step 367: 244854 + 669 = 245523
Step 368: 245523 + 669 = 246192
Step 369: 246192 + 669 = 246861
Step 370: 246861 + 669 = 247530
Step 371: 247530 + 669 = 248199
Step 372: 248199 + 669 = 248868
Step 373: 248868 + 669 = 249537
Step 374: 249537 + 669 = 250206
Step 375: 250206 + 669 = 250875
Step 376: 250875 + 669 = 251544
Step 377: 251544 + 669 = 252213
Step 378: 252213 + 669 = 252882
Step 379: 252882 + 669 = 253551
Step 380: 253551 + 669 = 254220
Step 381: 254220 + 669 = 254889
Step 382: 254889 + 669 = 255558
Step 383: 255558 + 669 = 256227
Step 384: 256227 + 669 = 256896
Step 385: 256896 + 669 = 257565
Step 386: 257565 + 669 = 258234
Step 387: 258234 + 669 = 258903
Step 388: 258903 + 669 = 259572
Step 389: 259572 + 669 = 260241
Step 390: 260241 + 669 = 260910
Step 391: 260910 + 669 = 261579
Step 392: 261579 + 669 = 262248
Step 393: 262248 + 669 = 262917
Step 394: 262917 + 669 = 263586
Step 395: 263586 + 669 = 264255
Step 396: 264255 + 669 = 264924
Step 397: 264924 + 669 = 265593
Step 398: 265593 + 669 = 266262
Step 399: 266262 + 669 = 266931
Step 400: 266931 + 669 = 267600
Step 401: 267600 + 669 = 268269
Step 402: 268269 + 669 = 268938
Step 403: 268938 + 669 = 269607
Step 404: 269607 + 669 = 270276
Step 405: 270276 + 669 = 270945
Step 406: 270945 + 669 = 271614
Step 407: 271614 + 669 = 272283
Step 408: 272283 + 669 = 272952
Step 409: 272952 + 669 = 273621
Step 410: 273621 + 669 = 274290
Step 411: 274290 + 669 = 274959
Step 412: 274959 + 669 = 275628
Step 413: 275628 + 669 = 276297
Step 414: 276297 + 669 = 276966
Step 415: 276966 + 669 = 277635
Step 416: 277635 + 669 = 278304
Step 417: 278304 + 669 = 278973
Step 418: 278973 + 669 = 279642
Step 419: 279642 + 669 = 280311
Step 420: 280311 + 669 = 280980
Step 421: 280980 + 669 = 281649
Step 422: 281649 + 669 = 282318
Step 423: 282318 + 669 = 282987
Step 424: 282987 + 669 = 283656
Step 425: 283656 + 669 = 284325
Step 426: 284325 + 669 = 284994
Step 427: 284994 + 669 = 285663
Step 428: 285663 + 669 = 286332
Step 429: 286332 + 669 = 287001
Step 430: 287001 + 669 = 287670
Step 431: 287670 + 669 = 288339

So, 669*431 = 288339