Alright, let's solve this math problem step by step. First, we have the number 641. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 491. So, we're going to take the number 641 and add it to itself 491 times.
Step 1: 0 + 641 = 641
Step 2: 641 + 641 = 1282
Step 3: 1282 + 641 = 1923
Step 4: 1923 + 641 = 2564
Step 5: 2564 + 641 = 3205
Step 6: 3205 + 641 = 3846
Step 7: 3846 + 641 = 4487
Step 8: 4487 + 641 = 5128
Step 9: 5128 + 641 = 5769
Step 10: 5769 + 641 = 6410
Step 11: 6410 + 641 = 7051
Step 12: 7051 + 641 = 7692
Step 13: 7692 + 641 = 8333
Step 14: 8333 + 641 = 8974
Step 15: 8974 + 641 = 9615
Step 16: 9615 + 641 = 10256
Step 17: 10256 + 641 = 10897
Step 18: 10897 + 641 = 11538
Step 19: 11538 + 641 = 12179
Step 20: 12179 + 641 = 12820
Step 21: 12820 + 641 = 13461
Step 22: 13461 + 641 = 14102
Step 23: 14102 + 641 = 14743
Step 24: 14743 + 641 = 15384
Step 25: 15384 + 641 = 16025
Step 26: 16025 + 641 = 16666
Step 27: 16666 + 641 = 17307
Step 28: 17307 + 641 = 17948
Step 29: 17948 + 641 = 18589
Step 30: 18589 + 641 = 19230
Step 31: 19230 + 641 = 19871
Step 32: 19871 + 641 = 20512
Step 33: 20512 + 641 = 21153
Step 34: 21153 + 641 = 21794
Step 35: 21794 + 641 = 22435
Step 36: 22435 + 641 = 23076
Step 37: 23076 + 641 = 23717
Step 38: 23717 + 641 = 24358
Step 39: 24358 + 641 = 24999
Step 40: 24999 + 641 = 25640
Step 41: 25640 + 641 = 26281
Step 42: 26281 + 641 = 26922
Step 43: 26922 + 641 = 27563
Step 44: 27563 + 641 = 28204
Step 45: 28204 + 641 = 28845
Step 46: 28845 + 641 = 29486
Step 47: 29486 + 641 = 30127
Step 48: 30127 + 641 = 30768
Step 49: 30768 + 641 = 31409
Step 50: 31409 + 641 = 32050
Step 51: 32050 + 641 = 32691
Step 52: 32691 + 641 = 33332
Step 53: 33332 + 641 = 33973
Step 54: 33973 + 641 = 34614
Step 55: 34614 + 641 = 35255
Step 56: 35255 + 641 = 35896
Step 57: 35896 + 641 = 36537
Step 58: 36537 + 641 = 37178
Step 59: 37178 + 641 = 37819
Step 60: 37819 + 641 = 38460
Step 61: 38460 + 641 = 39101
Step 62: 39101 + 641 = 39742
Step 63: 39742 + 641 = 40383
Step 64: 40383 + 641 = 41024
Step 65: 41024 + 641 = 41665
Step 66: 41665 + 641 = 42306
Step 67: 42306 + 641 = 42947
Step 68: 42947 + 641 = 43588
Step 69: 43588 + 641 = 44229
Step 70: 44229 + 641 = 44870
Step 71: 44870 + 641 = 45511
Step 72: 45511 + 641 = 46152
Step 73: 46152 + 641 = 46793
Step 74: 46793 + 641 = 47434
Step 75: 47434 + 641 = 48075
Step 76: 48075 + 641 = 48716
Step 77: 48716 + 641 = 49357
Step 78: 49357 + 641 = 49998
Step 79: 49998 + 641 = 50639
Step 80: 50639 + 641 = 51280
Step 81: 51280 + 641 = 51921
Step 82: 51921 + 641 = 52562
Step 83: 52562 + 641 = 53203
Step 84: 53203 + 641 = 53844
Step 85: 53844 + 641 = 54485
Step 86: 54485 + 641 = 55126
Step 87: 55126 + 641 = 55767
Step 88: 55767 + 641 = 56408
Step 89: 56408 + 641 = 57049
Step 90: 57049 + 641 = 57690
Step 91: 57690 + 641 = 58331
Step 92: 58331 + 641 = 58972
Step 93: 58972 + 641 = 59613
Step 94: 59613 + 641 = 60254
Step 95: 60254 + 641 = 60895
Step 96: 60895 + 641 = 61536
Step 97: 61536 + 641 = 62177
Step 98: 62177 + 641 = 62818
Step 99: 62818 + 641 = 63459
Step 100: 63459 + 641 = 64100
Step 101: 64100 + 641 = 64741
Step 102: 64741 + 641 = 65382
Step 103: 65382 + 641 = 66023
Step 104: 66023 + 641 = 66664
Step 105: 66664 + 641 = 67305
Step 106: 67305 + 641 = 67946
Step 107: 67946 + 641 = 68587
Step 108: 68587 + 641 = 69228
Step 109: 69228 + 641 = 69869
Step 110: 69869 + 641 = 70510
Step 111: 70510 + 641 = 71151
Step 112: 71151 + 641 = 71792
Step 113: 71792 + 641 = 72433
Step 114: 72433 + 641 = 73074
Step 115: 73074 + 641 = 73715
Step 116: 73715 + 641 = 74356
Step 117: 74356 + 641 = 74997
Step 118: 74997 + 641 = 75638
Step 119: 75638 + 641 = 76279
Step 120: 76279 + 641 = 76920
Step 121: 76920 + 641 = 77561
Step 122: 77561 + 641 = 78202
Step 123: 78202 + 641 = 78843
Step 124: 78843 + 641 = 79484
Step 125: 79484 + 641 = 80125
Step 126: 80125 + 641 = 80766
Step 127: 80766 + 641 = 81407
Step 128: 81407 + 641 = 82048
Step 129: 82048 + 641 = 82689
Step 130: 82689 + 641 = 83330
Step 131: 83330 + 641 = 83971
Step 132: 83971 + 641 = 84612
Step 133: 84612 + 641 = 85253
Step 134: 85253 + 641 = 85894
Step 135: 85894 + 641 = 86535
Step 136: 86535 + 641 = 87176
Step 137: 87176 + 641 = 87817
Step 138: 87817 + 641 = 88458
Step 139: 88458 + 641 = 89099
Step 140: 89099 + 641 = 89740
Step 141: 89740 + 641 = 90381
Step 142: 90381 + 641 = 91022
Step 143: 91022 + 641 = 91663
Step 144: 91663 + 641 = 92304
Step 145: 92304 + 641 = 92945
Step 146: 92945 + 641 = 93586
Step 147: 93586 + 641 = 94227
Step 148: 94227 + 641 = 94868
Step 149: 94868 + 641 = 95509
Step 150: 95509 + 641 = 96150
Step 151: 96150 + 641 = 96791
Step 152: 96791 + 641 = 97432
Step 153: 97432 + 641 = 98073
Step 154: 98073 + 641 = 98714
Step 155: 98714 + 641 = 99355
Step 156: 99355 + 641 = 99996
Step 157: 99996 + 641 = 100637
Step 158: 100637 + 641 = 101278
Step 159: 101278 + 641 = 101919
Step 160: 101919 + 641 = 102560
Step 161: 102560 + 641 = 103201
Step 162: 103201 + 641 = 103842
Step 163: 103842 + 641 = 104483
Step 164: 104483 + 641 = 105124
Step 165: 105124 + 641 = 105765
Step 166: 105765 + 641 = 106406
Step 167: 106406 + 641 = 107047
Step 168: 107047 + 641 = 107688
Step 169: 107688 + 641 = 108329
Step 170: 108329 + 641 = 108970
Step 171: 108970 + 641 = 109611
Step 172: 109611 + 641 = 110252
Step 173: 110252 + 641 = 110893
Step 174: 110893 + 641 = 111534
Step 175: 111534 + 641 = 112175
Step 176: 112175 + 641 = 112816
Step 177: 112816 + 641 = 113457
Step 178: 113457 + 641 = 114098
Step 179: 114098 + 641 = 114739
Step 180: 114739 + 641 = 115380
Step 181: 115380 + 641 = 116021
Step 182: 116021 + 641 = 116662
Step 183: 116662 + 641 = 117303
Step 184: 117303 + 641 = 117944
Step 185: 117944 + 641 = 118585
Step 186: 118585 + 641 = 119226
Step 187: 119226 + 641 = 119867
Step 188: 119867 + 641 = 120508
Step 189: 120508 + 641 = 121149
Step 190: 121149 + 641 = 121790
Step 191: 121790 + 641 = 122431
Step 192: 122431 + 641 = 123072
Step 193: 123072 + 641 = 123713
Step 194: 123713 + 641 = 124354
Step 195: 124354 + 641 = 124995
Step 196: 124995 + 641 = 125636
Step 197: 125636 + 641 = 126277
Step 198: 126277 + 641 = 126918
Step 199: 126918 + 641 = 127559
Step 200: 127559 + 641 = 128200
Step 201: 128200 + 641 = 128841
Step 202: 128841 + 641 = 129482
Step 203: 129482 + 641 = 130123
Step 204: 130123 + 641 = 130764
Step 205: 130764 + 641 = 131405
Step 206: 131405 + 641 = 132046
Step 207: 132046 + 641 = 132687
Step 208: 132687 + 641 = 133328
Step 209: 133328 + 641 = 133969
Step 210: 133969 + 641 = 134610
Step 211: 134610 + 641 = 135251
Step 212: 135251 + 641 = 135892
Step 213: 135892 + 641 = 136533
Step 214: 136533 + 641 = 137174
Step 215: 137174 + 641 = 137815
Step 216: 137815 + 641 = 138456
Step 217: 138456 + 641 = 139097
Step 218: 139097 + 641 = 139738
Step 219: 139738 + 641 = 140379
Step 220: 140379 + 641 = 141020
Step 221: 141020 + 641 = 141661
Step 222: 141661 + 641 = 142302
Step 223: 142302 + 641 = 142943
Step 224: 142943 + 641 = 143584
Step 225: 143584 + 641 = 144225
Step 226: 144225 + 641 = 144866
Step 227: 144866 + 641 = 145507
Step 228: 145507 + 641 = 146148
Step 229: 146148 + 641 = 146789
Step 230: 146789 + 641 = 147430
Step 231: 147430 + 641 = 148071
Step 232: 148071 + 641 = 148712
Step 233: 148712 + 641 = 149353
Step 234: 149353 + 641 = 149994
Step 235: 149994 + 641 = 150635
Step 236: 150635 + 641 = 151276
Step 237: 151276 + 641 = 151917
Step 238: 151917 + 641 = 152558
Step 239: 152558 + 641 = 153199
Step 240: 153199 + 641 = 153840
Step 241: 153840 + 641 = 154481
Step 242: 154481 + 641 = 155122
Step 243: 155122 + 641 = 155763
Step 244: 155763 + 641 = 156404
Step 245: 156404 + 641 = 157045
Step 246: 157045 + 641 = 157686
Step 247: 157686 + 641 = 158327
Step 248: 158327 + 641 = 158968
Step 249: 158968 + 641 = 159609
Step 250: 159609 + 641 = 160250
Step 251: 160250 + 641 = 160891
Step 252: 160891 + 641 = 161532
Step 253: 161532 + 641 = 162173
Step 254: 162173 + 641 = 162814
Step 255: 162814 + 641 = 163455
Step 256: 163455 + 641 = 164096
Step 257: 164096 + 641 = 164737
Step 258: 164737 + 641 = 165378
Step 259: 165378 + 641 = 166019
Step 260: 166019 + 641 = 166660
Step 261: 166660 + 641 = 167301
Step 262: 167301 + 641 = 167942
Step 263: 167942 + 641 = 168583
Step 264: 168583 + 641 = 169224
Step 265: 169224 + 641 = 169865
Step 266: 169865 + 641 = 170506
Step 267: 170506 + 641 = 171147
Step 268: 171147 + 641 = 171788
Step 269: 171788 + 641 = 172429
Step 270: 172429 + 641 = 173070
Step 271: 173070 + 641 = 173711
Step 272: 173711 + 641 = 174352
Step 273: 174352 + 641 = 174993
Step 274: 174993 + 641 = 175634
Step 275: 175634 + 641 = 176275
Step 276: 176275 + 641 = 176916
Step 277: 176916 + 641 = 177557
Step 278: 177557 + 641 = 178198
Step 279: 178198 + 641 = 178839
Step 280: 178839 + 641 = 179480
Step 281: 179480 + 641 = 180121
Step 282: 180121 + 641 = 180762
Step 283: 180762 + 641 = 181403
Step 284: 181403 + 641 = 182044
Step 285: 182044 + 641 = 182685
Step 286: 182685 + 641 = 183326
Step 287: 183326 + 641 = 183967
Step 288: 183967 + 641 = 184608
Step 289: 184608 + 641 = 185249
Step 290: 185249 + 641 = 185890
Step 291: 185890 + 641 = 186531
Step 292: 186531 + 641 = 187172
Step 293: 187172 + 641 = 187813
Step 294: 187813 + 641 = 188454
Step 295: 188454 + 641 = 189095
Step 296: 189095 + 641 = 189736
Step 297: 189736 + 641 = 190377
Step 298: 190377 + 641 = 191018
Step 299: 191018 + 641 = 191659
Step 300: 191659 + 641 = 192300
Step 301: 192300 + 641 = 192941
Step 302: 192941 + 641 = 193582
Step 303: 193582 + 641 = 194223
Step 304: 194223 + 641 = 194864
Step 305: 194864 + 641 = 195505
Step 306: 195505 + 641 = 196146
Step 307: 196146 + 641 = 196787
Step 308: 196787 + 641 = 197428
Step 309: 197428 + 641 = 198069
Step 310: 198069 + 641 = 198710
Step 311: 198710 + 641 = 199351
Step 312: 199351 + 641 = 199992
Step 313: 199992 + 641 = 200633
Step 314: 200633 + 641 = 201274
Step 315: 201274 + 641 = 201915
Step 316: 201915 + 641 = 202556
Step 317: 202556 + 641 = 203197
Step 318: 203197 + 641 = 203838
Step 319: 203838 + 641 = 204479
Step 320: 204479 + 641 = 205120
Step 321: 205120 + 641 = 205761
Step 322: 205761 + 641 = 206402
Step 323: 206402 + 641 = 207043
Step 324: 207043 + 641 = 207684
Step 325: 207684 + 641 = 208325
Step 326: 208325 + 641 = 208966
Step 327: 208966 + 641 = 209607
Step 328: 209607 + 641 = 210248
Step 329: 210248 + 641 = 210889
Step 330: 210889 + 641 = 211530
Step 331: 211530 + 641 = 212171
Step 332: 212171 + 641 = 212812
Step 333: 212812 + 641 = 213453
Step 334: 213453 + 641 = 214094
Step 335: 214094 + 641 = 214735
Step 336: 214735 + 641 = 215376
Step 337: 215376 + 641 = 216017
Step 338: 216017 + 641 = 216658
Step 339: 216658 + 641 = 217299
Step 340: 217299 + 641 = 217940
Step 341: 217940 + 641 = 218581
Step 342: 218581 + 641 = 219222
Step 343: 219222 + 641 = 219863
Step 344: 219863 + 641 = 220504
Step 345: 220504 + 641 = 221145
Step 346: 221145 + 641 = 221786
Step 347: 221786 + 641 = 222427
Step 348: 222427 + 641 = 223068
Step 349: 223068 + 641 = 223709
Step 350: 223709 + 641 = 224350
Step 351: 224350 + 641 = 224991
Step 352: 224991 + 641 = 225632
Step 353: 225632 + 641 = 226273
Step 354: 226273 + 641 = 226914
Step 355: 226914 + 641 = 227555
Step 356: 227555 + 641 = 228196
Step 357: 228196 + 641 = 228837
Step 358: 228837 + 641 = 229478
Step 359: 229478 + 641 = 230119
Step 360: 230119 + 641 = 230760
Step 361: 230760 + 641 = 231401
Step 362: 231401 + 641 = 232042
Step 363: 232042 + 641 = 232683
Step 364: 232683 + 641 = 233324
Step 365: 233324 + 641 = 233965
Step 366: 233965 + 641 = 234606
Step 367: 234606 + 641 = 235247
Step 368: 235247 + 641 = 235888
Step 369: 235888 + 641 = 236529
Step 370: 236529 + 641 = 237170
Step 371: 237170 + 641 = 237811
Step 372: 237811 + 641 = 238452
Step 373: 238452 + 641 = 239093
Step 374: 239093 + 641 = 239734
Step 375: 239734 + 641 = 240375
Step 376: 240375 + 641 = 241016
Step 377: 241016 + 641 = 241657
Step 378: 241657 + 641 = 242298
Step 379: 242298 + 641 = 242939
Step 380: 242939 + 641 = 243580
Step 381: 243580 + 641 = 244221
Step 382: 244221 + 641 = 244862
Step 383: 244862 + 641 = 245503
Step 384: 245503 + 641 = 246144
Step 385: 246144 + 641 = 246785
Step 386: 246785 + 641 = 247426
Step 387: 247426 + 641 = 248067
Step 388: 248067 + 641 = 248708
Step 389: 248708 + 641 = 249349
Step 390: 249349 + 641 = 249990
Step 391: 249990 + 641 = 250631
Step 392: 250631 + 641 = 251272
Step 393: 251272 + 641 = 251913
Step 394: 251913 + 641 = 252554
Step 395: 252554 + 641 = 253195
Step 396: 253195 + 641 = 253836
Step 397: 253836 + 641 = 254477
Step 398: 254477 + 641 = 255118
Step 399: 255118 + 641 = 255759
Step 400: 255759 + 641 = 256400
Step 401: 256400 + 641 = 257041
Step 402: 257041 + 641 = 257682
Step 403: 257682 + 641 = 258323
Step 404: 258323 + 641 = 258964
Step 405: 258964 + 641 = 259605
Step 406: 259605 + 641 = 260246
Step 407: 260246 + 641 = 260887
Step 408: 260887 + 641 = 261528
Step 409: 261528 + 641 = 262169
Step 410: 262169 + 641 = 262810
Step 411: 262810 + 641 = 263451
Step 412: 263451 + 641 = 264092
Step 413: 264092 + 641 = 264733
Step 414: 264733 + 641 = 265374
Step 415: 265374 + 641 = 266015
Step 416: 266015 + 641 = 266656
Step 417: 266656 + 641 = 267297
Step 418: 267297 + 641 = 267938
Step 419: 267938 + 641 = 268579
Step 420: 268579 + 641 = 269220
Step 421: 269220 + 641 = 269861
Step 422: 269861 + 641 = 270502
Step 423: 270502 + 641 = 271143
Step 424: 271143 + 641 = 271784
Step 425: 271784 + 641 = 272425
Step 426: 272425 + 641 = 273066
Step 427: 273066 + 641 = 273707
Step 428: 273707 + 641 = 274348
Step 429: 274348 + 641 = 274989
Step 430: 274989 + 641 = 275630
Step 431: 275630 + 641 = 276271
Step 432: 276271 + 641 = 276912
Step 433: 276912 + 641 = 277553
Step 434: 277553 + 641 = 278194
Step 435: 278194 + 641 = 278835
Step 436: 278835 + 641 = 279476
Step 437: 279476 + 641 = 280117
Step 438: 280117 + 641 = 280758
Step 439: 280758 + 641 = 281399
Step 440: 281399 + 641 = 282040
Step 441: 282040 + 641 = 282681
Step 442: 282681 + 641 = 283322
Step 443: 283322 + 641 = 283963
Step 444: 283963 + 641 = 284604
Step 445: 284604 + 641 = 285245
Step 446: 285245 + 641 = 285886
Step 447: 285886 + 641 = 286527
Step 448: 286527 + 641 = 287168
Step 449: 287168 + 641 = 287809
Step 450: 287809 + 641 = 288450
Step 451: 288450 + 641 = 289091
Step 452: 289091 + 641 = 289732
Step 453: 289732 + 641 = 290373
Step 454: 290373 + 641 = 291014
Step 455: 291014 + 641 = 291655
Step 456: 291655 + 641 = 292296
Step 457: 292296 + 641 = 292937
Step 458: 292937 + 641 = 293578
Step 459: 293578 + 641 = 294219
Step 460: 294219 + 641 = 294860
Step 461: 294860 + 641 = 295501
Step 462: 295501 + 641 = 296142
Step 463: 296142 + 641 = 296783
Step 464: 296783 + 641 = 297424
Step 465: 297424 + 641 = 298065
Step 466: 298065 + 641 = 298706
Step 467: 298706 + 641 = 299347
Step 468: 299347 + 641 = 299988
Step 469: 299988 + 641 = 300629
Step 470: 300629 + 641 = 301270
Step 471: 301270 + 641 = 301911
Step 472: 301911 + 641 = 302552
Step 473: 302552 + 641 = 303193
Step 474: 303193 + 641 = 303834
Step 475: 303834 + 641 = 304475
Step 476: 304475 + 641 = 305116
Step 477: 305116 + 641 = 305757
Step 478: 305757 + 641 = 306398
Step 479: 306398 + 641 = 307039
Step 480: 307039 + 641 = 307680
Step 481: 307680 + 641 = 308321
Step 482: 308321 + 641 = 308962
Step 483: 308962 + 641 = 309603
Step 484: 309603 + 641 = 310244
Step 485: 310244 + 641 = 310885
Step 486: 310885 + 641 = 311526
Step 487: 311526 + 641 = 312167
Step 488: 312167 + 641 = 312808
Step 489: 312808 + 641 = 313449
Step 490: 313449 + 641 = 314090
Step 491: 314090 + 641 = 314731

So, 641*491 = 314731