Alright, let's solve this math problem step by step. First, we have the number 521. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 412. So, we're going to take the number 521 and add it to itself 412 times.
Step 1: 0 + 521 = 521
Step 2: 521 + 521 = 1042
Step 3: 1042 + 521 = 1563
Step 4: 1563 + 521 = 2084
Step 5: 2084 + 521 = 2605
Step 6: 2605 + 521 = 3126
Step 7: 3126 + 521 = 3647
Step 8: 3647 + 521 = 4168
Step 9: 4168 + 521 = 4689
Step 10: 4689 + 521 = 5210
Step 11: 5210 + 521 = 5731
Step 12: 5731 + 521 = 6252
Step 13: 6252 + 521 = 6773
Step 14: 6773 + 521 = 7294
Step 15: 7294 + 521 = 7815
Step 16: 7815 + 521 = 8336
Step 17: 8336 + 521 = 8857
Step 18: 8857 + 521 = 9378
Step 19: 9378 + 521 = 9899
Step 20: 9899 + 521 = 10420
Step 21: 10420 + 521 = 10941
Step 22: 10941 + 521 = 11462
Step 23: 11462 + 521 = 11983
Step 24: 11983 + 521 = 12504
Step 25: 12504 + 521 = 13025
Step 26: 13025 + 521 = 13546
Step 27: 13546 + 521 = 14067
Step 28: 14067 + 521 = 14588
Step 29: 14588 + 521 = 15109
Step 30: 15109 + 521 = 15630
Step 31: 15630 + 521 = 16151
Step 32: 16151 + 521 = 16672
Step 33: 16672 + 521 = 17193
Step 34: 17193 + 521 = 17714
Step 35: 17714 + 521 = 18235
Step 36: 18235 + 521 = 18756
Step 37: 18756 + 521 = 19277
Step 38: 19277 + 521 = 19798
Step 39: 19798 + 521 = 20319
Step 40: 20319 + 521 = 20840
Step 41: 20840 + 521 = 21361
Step 42: 21361 + 521 = 21882
Step 43: 21882 + 521 = 22403
Step 44: 22403 + 521 = 22924
Step 45: 22924 + 521 = 23445
Step 46: 23445 + 521 = 23966
Step 47: 23966 + 521 = 24487
Step 48: 24487 + 521 = 25008
Step 49: 25008 + 521 = 25529
Step 50: 25529 + 521 = 26050
Step 51: 26050 + 521 = 26571
Step 52: 26571 + 521 = 27092
Step 53: 27092 + 521 = 27613
Step 54: 27613 + 521 = 28134
Step 55: 28134 + 521 = 28655
Step 56: 28655 + 521 = 29176
Step 57: 29176 + 521 = 29697
Step 58: 29697 + 521 = 30218
Step 59: 30218 + 521 = 30739
Step 60: 30739 + 521 = 31260
Step 61: 31260 + 521 = 31781
Step 62: 31781 + 521 = 32302
Step 63: 32302 + 521 = 32823
Step 64: 32823 + 521 = 33344
Step 65: 33344 + 521 = 33865
Step 66: 33865 + 521 = 34386
Step 67: 34386 + 521 = 34907
Step 68: 34907 + 521 = 35428
Step 69: 35428 + 521 = 35949
Step 70: 35949 + 521 = 36470
Step 71: 36470 + 521 = 36991
Step 72: 36991 + 521 = 37512
Step 73: 37512 + 521 = 38033
Step 74: 38033 + 521 = 38554
Step 75: 38554 + 521 = 39075
Step 76: 39075 + 521 = 39596
Step 77: 39596 + 521 = 40117
Step 78: 40117 + 521 = 40638
Step 79: 40638 + 521 = 41159
Step 80: 41159 + 521 = 41680
Step 81: 41680 + 521 = 42201
Step 82: 42201 + 521 = 42722
Step 83: 42722 + 521 = 43243
Step 84: 43243 + 521 = 43764
Step 85: 43764 + 521 = 44285
Step 86: 44285 + 521 = 44806
Step 87: 44806 + 521 = 45327
Step 88: 45327 + 521 = 45848
Step 89: 45848 + 521 = 46369
Step 90: 46369 + 521 = 46890
Step 91: 46890 + 521 = 47411
Step 92: 47411 + 521 = 47932
Step 93: 47932 + 521 = 48453
Step 94: 48453 + 521 = 48974
Step 95: 48974 + 521 = 49495
Step 96: 49495 + 521 = 50016
Step 97: 50016 + 521 = 50537
Step 98: 50537 + 521 = 51058
Step 99: 51058 + 521 = 51579
Step 100: 51579 + 521 = 52100
Step 101: 52100 + 521 = 52621
Step 102: 52621 + 521 = 53142
Step 103: 53142 + 521 = 53663
Step 104: 53663 + 521 = 54184
Step 105: 54184 + 521 = 54705
Step 106: 54705 + 521 = 55226
Step 107: 55226 + 521 = 55747
Step 108: 55747 + 521 = 56268
Step 109: 56268 + 521 = 56789
Step 110: 56789 + 521 = 57310
Step 111: 57310 + 521 = 57831
Step 112: 57831 + 521 = 58352
Step 113: 58352 + 521 = 58873
Step 114: 58873 + 521 = 59394
Step 115: 59394 + 521 = 59915
Step 116: 59915 + 521 = 60436
Step 117: 60436 + 521 = 60957
Step 118: 60957 + 521 = 61478
Step 119: 61478 + 521 = 61999
Step 120: 61999 + 521 = 62520
Step 121: 62520 + 521 = 63041
Step 122: 63041 + 521 = 63562
Step 123: 63562 + 521 = 64083
Step 124: 64083 + 521 = 64604
Step 125: 64604 + 521 = 65125
Step 126: 65125 + 521 = 65646
Step 127: 65646 + 521 = 66167
Step 128: 66167 + 521 = 66688
Step 129: 66688 + 521 = 67209
Step 130: 67209 + 521 = 67730
Step 131: 67730 + 521 = 68251
Step 132: 68251 + 521 = 68772
Step 133: 68772 + 521 = 69293
Step 134: 69293 + 521 = 69814
Step 135: 69814 + 521 = 70335
Step 136: 70335 + 521 = 70856
Step 137: 70856 + 521 = 71377
Step 138: 71377 + 521 = 71898
Step 139: 71898 + 521 = 72419
Step 140: 72419 + 521 = 72940
Step 141: 72940 + 521 = 73461
Step 142: 73461 + 521 = 73982
Step 143: 73982 + 521 = 74503
Step 144: 74503 + 521 = 75024
Step 145: 75024 + 521 = 75545
Step 146: 75545 + 521 = 76066
Step 147: 76066 + 521 = 76587
Step 148: 76587 + 521 = 77108
Step 149: 77108 + 521 = 77629
Step 150: 77629 + 521 = 78150
Step 151: 78150 + 521 = 78671
Step 152: 78671 + 521 = 79192
Step 153: 79192 + 521 = 79713
Step 154: 79713 + 521 = 80234
Step 155: 80234 + 521 = 80755
Step 156: 80755 + 521 = 81276
Step 157: 81276 + 521 = 81797
Step 158: 81797 + 521 = 82318
Step 159: 82318 + 521 = 82839
Step 160: 82839 + 521 = 83360
Step 161: 83360 + 521 = 83881
Step 162: 83881 + 521 = 84402
Step 163: 84402 + 521 = 84923
Step 164: 84923 + 521 = 85444
Step 165: 85444 + 521 = 85965
Step 166: 85965 + 521 = 86486
Step 167: 86486 + 521 = 87007
Step 168: 87007 + 521 = 87528
Step 169: 87528 + 521 = 88049
Step 170: 88049 + 521 = 88570
Step 171: 88570 + 521 = 89091
Step 172: 89091 + 521 = 89612
Step 173: 89612 + 521 = 90133
Step 174: 90133 + 521 = 90654
Step 175: 90654 + 521 = 91175
Step 176: 91175 + 521 = 91696
Step 177: 91696 + 521 = 92217
Step 178: 92217 + 521 = 92738
Step 179: 92738 + 521 = 93259
Step 180: 93259 + 521 = 93780
Step 181: 93780 + 521 = 94301
Step 182: 94301 + 521 = 94822
Step 183: 94822 + 521 = 95343
Step 184: 95343 + 521 = 95864
Step 185: 95864 + 521 = 96385
Step 186: 96385 + 521 = 96906
Step 187: 96906 + 521 = 97427
Step 188: 97427 + 521 = 97948
Step 189: 97948 + 521 = 98469
Step 190: 98469 + 521 = 98990
Step 191: 98990 + 521 = 99511
Step 192: 99511 + 521 = 100032
Step 193: 100032 + 521 = 100553
Step 194: 100553 + 521 = 101074
Step 195: 101074 + 521 = 101595
Step 196: 101595 + 521 = 102116
Step 197: 102116 + 521 = 102637
Step 198: 102637 + 521 = 103158
Step 199: 103158 + 521 = 103679
Step 200: 103679 + 521 = 104200
Step 201: 104200 + 521 = 104721
Step 202: 104721 + 521 = 105242
Step 203: 105242 + 521 = 105763
Step 204: 105763 + 521 = 106284
Step 205: 106284 + 521 = 106805
Step 206: 106805 + 521 = 107326
Step 207: 107326 + 521 = 107847
Step 208: 107847 + 521 = 108368
Step 209: 108368 + 521 = 108889
Step 210: 108889 + 521 = 109410
Step 211: 109410 + 521 = 109931
Step 212: 109931 + 521 = 110452
Step 213: 110452 + 521 = 110973
Step 214: 110973 + 521 = 111494
Step 215: 111494 + 521 = 112015
Step 216: 112015 + 521 = 112536
Step 217: 112536 + 521 = 113057
Step 218: 113057 + 521 = 113578
Step 219: 113578 + 521 = 114099
Step 220: 114099 + 521 = 114620
Step 221: 114620 + 521 = 115141
Step 222: 115141 + 521 = 115662
Step 223: 115662 + 521 = 116183
Step 224: 116183 + 521 = 116704
Step 225: 116704 + 521 = 117225
Step 226: 117225 + 521 = 117746
Step 227: 117746 + 521 = 118267
Step 228: 118267 + 521 = 118788
Step 229: 118788 + 521 = 119309
Step 230: 119309 + 521 = 119830
Step 231: 119830 + 521 = 120351
Step 232: 120351 + 521 = 120872
Step 233: 120872 + 521 = 121393
Step 234: 121393 + 521 = 121914
Step 235: 121914 + 521 = 122435
Step 236: 122435 + 521 = 122956
Step 237: 122956 + 521 = 123477
Step 238: 123477 + 521 = 123998
Step 239: 123998 + 521 = 124519
Step 240: 124519 + 521 = 125040
Step 241: 125040 + 521 = 125561
Step 242: 125561 + 521 = 126082
Step 243: 126082 + 521 = 126603
Step 244: 126603 + 521 = 127124
Step 245: 127124 + 521 = 127645
Step 246: 127645 + 521 = 128166
Step 247: 128166 + 521 = 128687
Step 248: 128687 + 521 = 129208
Step 249: 129208 + 521 = 129729
Step 250: 129729 + 521 = 130250
Step 251: 130250 + 521 = 130771
Step 252: 130771 + 521 = 131292
Step 253: 131292 + 521 = 131813
Step 254: 131813 + 521 = 132334
Step 255: 132334 + 521 = 132855
Step 256: 132855 + 521 = 133376
Step 257: 133376 + 521 = 133897
Step 258: 133897 + 521 = 134418
Step 259: 134418 + 521 = 134939
Step 260: 134939 + 521 = 135460
Step 261: 135460 + 521 = 135981
Step 262: 135981 + 521 = 136502
Step 263: 136502 + 521 = 137023
Step 264: 137023 + 521 = 137544
Step 265: 137544 + 521 = 138065
Step 266: 138065 + 521 = 138586
Step 267: 138586 + 521 = 139107
Step 268: 139107 + 521 = 139628
Step 269: 139628 + 521 = 140149
Step 270: 140149 + 521 = 140670
Step 271: 140670 + 521 = 141191
Step 272: 141191 + 521 = 141712
Step 273: 141712 + 521 = 142233
Step 274: 142233 + 521 = 142754
Step 275: 142754 + 521 = 143275
Step 276: 143275 + 521 = 143796
Step 277: 143796 + 521 = 144317
Step 278: 144317 + 521 = 144838
Step 279: 144838 + 521 = 145359
Step 280: 145359 + 521 = 145880
Step 281: 145880 + 521 = 146401
Step 282: 146401 + 521 = 146922
Step 283: 146922 + 521 = 147443
Step 284: 147443 + 521 = 147964
Step 285: 147964 + 521 = 148485
Step 286: 148485 + 521 = 149006
Step 287: 149006 + 521 = 149527
Step 288: 149527 + 521 = 150048
Step 289: 150048 + 521 = 150569
Step 290: 150569 + 521 = 151090
Step 291: 151090 + 521 = 151611
Step 292: 151611 + 521 = 152132
Step 293: 152132 + 521 = 152653
Step 294: 152653 + 521 = 153174
Step 295: 153174 + 521 = 153695
Step 296: 153695 + 521 = 154216
Step 297: 154216 + 521 = 154737
Step 298: 154737 + 521 = 155258
Step 299: 155258 + 521 = 155779
Step 300: 155779 + 521 = 156300
Step 301: 156300 + 521 = 156821
Step 302: 156821 + 521 = 157342
Step 303: 157342 + 521 = 157863
Step 304: 157863 + 521 = 158384
Step 305: 158384 + 521 = 158905
Step 306: 158905 + 521 = 159426
Step 307: 159426 + 521 = 159947
Step 308: 159947 + 521 = 160468
Step 309: 160468 + 521 = 160989
Step 310: 160989 + 521 = 161510
Step 311: 161510 + 521 = 162031
Step 312: 162031 + 521 = 162552
Step 313: 162552 + 521 = 163073
Step 314: 163073 + 521 = 163594
Step 315: 163594 + 521 = 164115
Step 316: 164115 + 521 = 164636
Step 317: 164636 + 521 = 165157
Step 318: 165157 + 521 = 165678
Step 319: 165678 + 521 = 166199
Step 320: 166199 + 521 = 166720
Step 321: 166720 + 521 = 167241
Step 322: 167241 + 521 = 167762
Step 323: 167762 + 521 = 168283
Step 324: 168283 + 521 = 168804
Step 325: 168804 + 521 = 169325
Step 326: 169325 + 521 = 169846
Step 327: 169846 + 521 = 170367
Step 328: 170367 + 521 = 170888
Step 329: 170888 + 521 = 171409
Step 330: 171409 + 521 = 171930
Step 331: 171930 + 521 = 172451
Step 332: 172451 + 521 = 172972
Step 333: 172972 + 521 = 173493
Step 334: 173493 + 521 = 174014
Step 335: 174014 + 521 = 174535
Step 336: 174535 + 521 = 175056
Step 337: 175056 + 521 = 175577
Step 338: 175577 + 521 = 176098
Step 339: 176098 + 521 = 176619
Step 340: 176619 + 521 = 177140
Step 341: 177140 + 521 = 177661
Step 342: 177661 + 521 = 178182
Step 343: 178182 + 521 = 178703
Step 344: 178703 + 521 = 179224
Step 345: 179224 + 521 = 179745
Step 346: 179745 + 521 = 180266
Step 347: 180266 + 521 = 180787
Step 348: 180787 + 521 = 181308
Step 349: 181308 + 521 = 181829
Step 350: 181829 + 521 = 182350
Step 351: 182350 + 521 = 182871
Step 352: 182871 + 521 = 183392
Step 353: 183392 + 521 = 183913
Step 354: 183913 + 521 = 184434
Step 355: 184434 + 521 = 184955
Step 356: 184955 + 521 = 185476
Step 357: 185476 + 521 = 185997
Step 358: 185997 + 521 = 186518
Step 359: 186518 + 521 = 187039
Step 360: 187039 + 521 = 187560
Step 361: 187560 + 521 = 188081
Step 362: 188081 + 521 = 188602
Step 363: 188602 + 521 = 189123
Step 364: 189123 + 521 = 189644
Step 365: 189644 + 521 = 190165
Step 366: 190165 + 521 = 190686
Step 367: 190686 + 521 = 191207
Step 368: 191207 + 521 = 191728
Step 369: 191728 + 521 = 192249
Step 370: 192249 + 521 = 192770
Step 371: 192770 + 521 = 193291
Step 372: 193291 + 521 = 193812
Step 373: 193812 + 521 = 194333
Step 374: 194333 + 521 = 194854
Step 375: 194854 + 521 = 195375
Step 376: 195375 + 521 = 195896
Step 377: 195896 + 521 = 196417
Step 378: 196417 + 521 = 196938
Step 379: 196938 + 521 = 197459
Step 380: 197459 + 521 = 197980
Step 381: 197980 + 521 = 198501
Step 382: 198501 + 521 = 199022
Step 383: 199022 + 521 = 199543
Step 384: 199543 + 521 = 200064
Step 385: 200064 + 521 = 200585
Step 386: 200585 + 521 = 201106
Step 387: 201106 + 521 = 201627
Step 388: 201627 + 521 = 202148
Step 389: 202148 + 521 = 202669
Step 390: 202669 + 521 = 203190
Step 391: 203190 + 521 = 203711
Step 392: 203711 + 521 = 204232
Step 393: 204232 + 521 = 204753
Step 394: 204753 + 521 = 205274
Step 395: 205274 + 521 = 205795
Step 396: 205795 + 521 = 206316
Step 397: 206316 + 521 = 206837
Step 398: 206837 + 521 = 207358
Step 399: 207358 + 521 = 207879
Step 400: 207879 + 521 = 208400
Step 401: 208400 + 521 = 208921
Step 402: 208921 + 521 = 209442
Step 403: 209442 + 521 = 209963
Step 404: 209963 + 521 = 210484
Step 405: 210484 + 521 = 211005
Step 406: 211005 + 521 = 211526
Step 407: 211526 + 521 = 212047
Step 408: 212047 + 521 = 212568
Step 409: 212568 + 521 = 213089
Step 410: 213089 + 521 = 213610
Step 411: 213610 + 521 = 214131
Step 412: 214131 + 521 = 214652

So, 521*412 = 214652