OK, let's work through this together. We're starting with 83 and we're going to multiply it by 458, which means we add 83 to itself 458 times.
Step 1: 0 + 83 = 83
Step 2: 83 + 83 = 166
Step 3: 166 + 83 = 249
Step 4: 249 + 83 = 332
Step 5: 332 + 83 = 415
Step 6: 415 + 83 = 498
Step 7: 498 + 83 = 581
Step 8: 581 + 83 = 664
Step 9: 664 + 83 = 747
Step 10: 747 + 83 = 830
Step 11: 830 + 83 = 913
Step 12: 913 + 83 = 996
Step 13: 996 + 83 = 1079
Step 14: 1079 + 83 = 1162
Step 15: 1162 + 83 = 1245
Step 16: 1245 + 83 = 1328
Step 17: 1328 + 83 = 1411
Step 18: 1411 + 83 = 1494
Step 19: 1494 + 83 = 1577
Step 20: 1577 + 83 = 1660
Step 21: 1660 + 83 = 1743
Step 22: 1743 + 83 = 1826
Step 23: 1826 + 83 = 1909
Step 24: 1909 + 83 = 1992
Step 25: 1992 + 83 = 2075
Step 26: 2075 + 83 = 2158
Step 27: 2158 + 83 = 2241
Step 28: 2241 + 83 = 2324
Step 29: 2324 + 83 = 2407
Step 30: 2407 + 83 = 2490
Step 31: 2490 + 83 = 2573
Step 32: 2573 + 83 = 2656
Step 33: 2656 + 83 = 2739
Step 34: 2739 + 83 = 2822
Step 35: 2822 + 83 = 2905
Step 36: 2905 + 83 = 2988
Step 37: 2988 + 83 = 3071
Step 38: 3071 + 83 = 3154
Step 39: 3154 + 83 = 3237
Step 40: 3237 + 83 = 3320
Step 41: 3320 + 83 = 3403
Step 42: 3403 + 83 = 3486
Step 43: 3486 + 83 = 3569
Step 44: 3569 + 83 = 3652
Step 45: 3652 + 83 = 3735
Step 46: 3735 + 83 = 3818
Step 47: 3818 + 83 = 3901
Step 48: 3901 + 83 = 3984
Step 49: 3984 + 83 = 4067
Step 50: 4067 + 83 = 4150
Step 51: 4150 + 83 = 4233
Step 52: 4233 + 83 = 4316
Step 53: 4316 + 83 = 4399
Step 54: 4399 + 83 = 4482
Step 55: 4482 + 83 = 4565
Step 56: 4565 + 83 = 4648
Step 57: 4648 + 83 = 4731
Step 58: 4731 + 83 = 4814
Step 59: 4814 + 83 = 4897
Step 60: 4897 + 83 = 4980
Step 61: 4980 + 83 = 5063
Step 62: 5063 + 83 = 5146
Step 63: 5146 + 83 = 5229
Step 64: 5229 + 83 = 5312
Step 65: 5312 + 83 = 5395
Step 66: 5395 + 83 = 5478
Step 67: 5478 + 83 = 5561
Step 68: 5561 + 83 = 5644
Step 69: 5644 + 83 = 5727
Step 70: 5727 + 83 = 5810
Step 71: 5810 + 83 = 5893
Step 72: 5893 + 83 = 5976
Step 73: 5976 + 83 = 6059
Step 74: 6059 + 83 = 6142
Step 75: 6142 + 83 = 6225
Step 76: 6225 + 83 = 6308
Step 77: 6308 + 83 = 6391
Step 78: 6391 + 83 = 6474
Step 79: 6474 + 83 = 6557
Step 80: 6557 + 83 = 6640
Step 81: 6640 + 83 = 6723
Step 82: 6723 + 83 = 6806
Step 83: 6806 + 83 = 6889
Step 84: 6889 + 83 = 6972
Step 85: 6972 + 83 = 7055
Step 86: 7055 + 83 = 7138
Step 87: 7138 + 83 = 7221
Step 88: 7221 + 83 = 7304
Step 89: 7304 + 83 = 7387
Step 90: 7387 + 83 = 7470
Step 91: 7470 + 83 = 7553
Step 92: 7553 + 83 = 7636
Step 93: 7636 + 83 = 7719
Step 94: 7719 + 83 = 7802
Step 95: 7802 + 83 = 7885
Step 96: 7885 + 83 = 7968
Step 97: 7968 + 83 = 8051
Step 98: 8051 + 83 = 8134
Step 99: 8134 + 83 = 8217
Step 100: 8217 + 83 = 8300
Step 101: 8300 + 83 = 8383
Step 102: 8383 + 83 = 8466
Step 103: 8466 + 83 = 8549
Step 104: 8549 + 83 = 8632
Step 105: 8632 + 83 = 8715
Step 106: 8715 + 83 = 8798
Step 107: 8798 + 83 = 8881
Step 108: 8881 + 83 = 8964
Step 109: 8964 + 83 = 9047
Step 110: 9047 + 83 = 9130
Step 111: 9130 + 83 = 9213
Step 112: 9213 + 83 = 9296
Step 113: 9296 + 83 = 9379
Step 114: 9379 + 83 = 9462
Step 115: 9462 + 83 = 9545
Step 116: 9545 + 83 = 9628
Step 117: 9628 + 83 = 9711
Step 118: 9711 + 83 = 9794
Step 119: 9794 + 83 = 9877
Step 120: 9877 + 83 = 9960
Step 121: 9960 + 83 = 10043
Step 122: 10043 + 83 = 10126
Step 123: 10126 + 83 = 10209
Step 124: 10209 + 83 = 10292
Step 125: 10292 + 83 = 10375
Step 126: 10375 + 83 = 10458
Step 127: 10458 + 83 = 10541
Step 128: 10541 + 83 = 10624
Step 129: 10624 + 83 = 10707
Step 130: 10707 + 83 = 10790
Step 131: 10790 + 83 = 10873
Step 132: 10873 + 83 = 10956
Step 133: 10956 + 83 = 11039
Step 134: 11039 + 83 = 11122
Step 135: 11122 + 83 = 11205
Step 136: 11205 + 83 = 11288
Step 137: 11288 + 83 = 11371
Step 138: 11371 + 83 = 11454
Step 139: 11454 + 83 = 11537
Step 140: 11537 + 83 = 11620
Step 141: 11620 + 83 = 11703
Step 142: 11703 + 83 = 11786
Step 143: 11786 + 83 = 11869
Step 144: 11869 + 83 = 11952
Step 145: 11952 + 83 = 12035
Step 146: 12035 + 83 = 12118
Step 147: 12118 + 83 = 12201
Step 148: 12201 + 83 = 12284
Step 149: 12284 + 83 = 12367
Step 150: 12367 + 83 = 12450
Step 151: 12450 + 83 = 12533
Step 152: 12533 + 83 = 12616
Step 153: 12616 + 83 = 12699
Step 154: 12699 + 83 = 12782
Step 155: 12782 + 83 = 12865
Step 156: 12865 + 83 = 12948
Step 157: 12948 + 83 = 13031
Step 158: 13031 + 83 = 13114
Step 159: 13114 + 83 = 13197
Step 160: 13197 + 83 = 13280
Step 161: 13280 + 83 = 13363
Step 162: 13363 + 83 = 13446
Step 163: 13446 + 83 = 13529
Step 164: 13529 + 83 = 13612
Step 165: 13612 + 83 = 13695
Step 166: 13695 + 83 = 13778
Step 167: 13778 + 83 = 13861
Step 168: 13861 + 83 = 13944
Step 169: 13944 + 83 = 14027
Step 170: 14027 + 83 = 14110
Step 171: 14110 + 83 = 14193
Step 172: 14193 + 83 = 14276
Step 173: 14276 + 83 = 14359
Step 174: 14359 + 83 = 14442
Step 175: 14442 + 83 = 14525
Step 176: 14525 + 83 = 14608
Step 177: 14608 + 83 = 14691
Step 178: 14691 + 83 = 14774
Step 179: 14774 + 83 = 14857
Step 180: 14857 + 83 = 14940
Step 181: 14940 + 83 = 15023
Step 182: 15023 + 83 = 15106
Step 183: 15106 + 83 = 15189
Step 184: 15189 + 83 = 15272
Step 185: 15272 + 83 = 15355
Step 186: 15355 + 83 = 15438
Step 187: 15438 + 83 = 15521
Step 188: 15521 + 83 = 15604
Step 189: 15604 + 83 = 15687
Step 190: 15687 + 83 = 15770
Step 191: 15770 + 83 = 15853
Step 192: 15853 + 83 = 15936
Step 193: 15936 + 83 = 16019
Step 194: 16019 + 83 = 16102
Step 195: 16102 + 83 = 16185
Step 196: 16185 + 83 = 16268
Step 197: 16268 + 83 = 16351
Step 198: 16351 + 83 = 16434
Step 199: 16434 + 83 = 16517
Step 200: 16517 + 83 = 16600
Step 201: 16600 + 83 = 16683
Step 202: 16683 + 83 = 16766
Step 203: 16766 + 83 = 16849
Step 204: 16849 + 83 = 16932
Step 205: 16932 + 83 = 17015
Step 206: 17015 + 83 = 17098
Step 207: 17098 + 83 = 17181
Step 208: 17181 + 83 = 17264
Step 209: 17264 + 83 = 17347
Step 210: 17347 + 83 = 17430
Step 211: 17430 + 83 = 17513
Step 212: 17513 + 83 = 17596
Step 213: 17596 + 83 = 17679
Step 214: 17679 + 83 = 17762
Step 215: 17762 + 83 = 17845
Step 216: 17845 + 83 = 17928
Step 217: 17928 + 83 = 18011
Step 218: 18011 + 83 = 18094
Step 219: 18094 + 83 = 18177
Step 220: 18177 + 83 = 18260
Step 221: 18260 + 83 = 18343
Step 222: 18343 + 83 = 18426
Step 223: 18426 + 83 = 18509
Step 224: 18509 + 83 = 18592
Step 225: 18592 + 83 = 18675
Step 226: 18675 + 83 = 18758
Step 227: 18758 + 83 = 18841
Step 228: 18841 + 83 = 18924
Step 229: 18924 + 83 = 19007
Step 230: 19007 + 83 = 19090
Step 231: 19090 + 83 = 19173
Step 232: 19173 + 83 = 19256
Step 233: 19256 + 83 = 19339
Step 234: 19339 + 83 = 19422
Step 235: 19422 + 83 = 19505
Step 236: 19505 + 83 = 19588
Step 237: 19588 + 83 = 19671
Step 238: 19671 + 83 = 19754
Step 239: 19754 + 83 = 19837
Step 240: 19837 + 83 = 19920
Step 241: 19920 + 83 = 20003
Step 242: 20003 + 83 = 20086
Step 243: 20086 + 83 = 20169
Step 244: 20169 + 83 = 20252
Step 245: 20252 + 83 = 20335
Step 246: 20335 + 83 = 20418
Step 247: 20418 + 83 = 20501
Step 248: 20501 + 83 = 20584
Step 249: 20584 + 83 = 20667
Step 250: 20667 + 83 = 20750
Step 251: 20750 + 83 = 20833
Step 252: 20833 + 83 = 20916
Step 253: 20916 + 83 = 20999
Step 254: 20999 + 83 = 21082
Step 255: 21082 + 83 = 21165
Step 256: 21165 + 83 = 21248
Step 257: 21248 + 83 = 21331
Step 258: 21331 + 83 = 21414
Step 259: 21414 + 83 = 21497
Step 260: 21497 + 83 = 21580
Step 261: 21580 + 83 = 21663
Step 262: 21663 + 83 = 21746
Step 263: 21746 + 83 = 21829
Step 264: 21829 + 83 = 21912
Step 265: 21912 + 83 = 21995
Step 266: 21995 + 83 = 22078
Step 267: 22078 + 83 = 22161
Step 268: 22161 + 83 = 22244
Step 269: 22244 + 83 = 22327
Step 270: 22327 + 83 = 22410
Step 271: 22410 + 83 = 22493
Step 272: 22493 + 83 = 22576
Step 273: 22576 + 83 = 22659
Step 274: 22659 + 83 = 22742
Step 275: 22742 + 83 = 22825
Step 276: 22825 + 83 = 22908
Step 277: 22908 + 83 = 22991
Step 278: 22991 + 83 = 23074
Step 279: 23074 + 83 = 23157
Step 280: 23157 + 83 = 23240
Step 281: 23240 + 83 = 23323
Step 282: 23323 + 83 = 23406
Step 283: 23406 + 83 = 23489
Step 284: 23489 + 83 = 23572
Step 285: 23572 + 83 = 23655
Step 286: 23655 + 83 = 23738
Step 287: 23738 + 83 = 23821
Step 288: 23821 + 83 = 23904
Step 289: 23904 + 83 = 23987
Step 290: 23987 + 83 = 24070
Step 291: 24070 + 83 = 24153
Step 292: 24153 + 83 = 24236
Step 293: 24236 + 83 = 24319
Step 294: 24319 + 83 = 24402
Step 295: 24402 + 83 = 24485
Step 296: 24485 + 83 = 24568
Step 297: 24568 + 83 = 24651
Step 298: 24651 + 83 = 24734
Step 299: 24734 + 83 = 24817
Step 300: 24817 + 83 = 24900
Step 301: 24900 + 83 = 24983
Step 302: 24983 + 83 = 25066
Step 303: 25066 + 83 = 25149
Step 304: 25149 + 83 = 25232
Step 305: 25232 + 83 = 25315
Step 306: 25315 + 83 = 25398
Step 307: 25398 + 83 = 25481
Step 308: 25481 + 83 = 25564
Step 309: 25564 + 83 = 25647
Step 310: 25647 + 83 = 25730
Step 311: 25730 + 83 = 25813
Step 312: 25813 + 83 = 25896
Step 313: 25896 + 83 = 25979
Step 314: 25979 + 83 = 26062
Step 315: 26062 + 83 = 26145
Step 316: 26145 + 83 = 26228
Step 317: 26228 + 83 = 26311
Step 318: 26311 + 83 = 26394
Step 319: 26394 + 83 = 26477
Step 320: 26477 + 83 = 26560
Step 321: 26560 + 83 = 26643
Step 322: 26643 + 83 = 26726
Step 323: 26726 + 83 = 26809
Step 324: 26809 + 83 = 26892
Step 325: 26892 + 83 = 26975
Step 326: 26975 + 83 = 27058
Step 327: 27058 + 83 = 27141
Step 328: 27141 + 83 = 27224
Step 329: 27224 + 83 = 27307
Step 330: 27307 + 83 = 27390
Step 331: 27390 + 83 = 27473
Step 332: 27473 + 83 = 27556
Step 333: 27556 + 83 = 27639
Step 334: 27639 + 83 = 27722
Step 335: 27722 + 83 = 27805
Step 336: 27805 + 83 = 27888
Step 337: 27888 + 83 = 27971
Step 338: 27971 + 83 = 28054
Step 339: 28054 + 83 = 28137
Step 340: 28137 + 83 = 28220
Step 341: 28220 + 83 = 28303
Step 342: 28303 + 83 = 28386
Step 343: 28386 + 83 = 28469
Step 344: 28469 + 83 = 28552
Step 345: 28552 + 83 = 28635
Step 346: 28635 + 83 = 28718
Step 347: 28718 + 83 = 28801
Step 348: 28801 + 83 = 28884
Step 349: 28884 + 83 = 28967
Step 350: 28967 + 83 = 29050
Step 351: 29050 + 83 = 29133
Step 352: 29133 + 83 = 29216
Step 353: 29216 + 83 = 29299
Step 354: 29299 + 83 = 29382
Step 355: 29382 + 83 = 29465
Step 356: 29465 + 83 = 29548
Step 357: 29548 + 83 = 29631
Step 358: 29631 + 83 = 29714
Step 359: 29714 + 83 = 29797
Step 360: 29797 + 83 = 29880
Step 361: 29880 + 83 = 29963
Step 362: 29963 + 83 = 30046
Step 363: 30046 + 83 = 30129
Step 364: 30129 + 83 = 30212
Step 365: 30212 + 83 = 30295
Step 366: 30295 + 83 = 30378
Step 367: 30378 + 83 = 30461
Step 368: 30461 + 83 = 30544
Step 369: 30544 + 83 = 30627
Step 370: 30627 + 83 = 30710
Step 371: 30710 + 83 = 30793
Step 372: 30793 + 83 = 30876
Step 373: 30876 + 83 = 30959
Step 374: 30959 + 83 = 31042
Step 375: 31042 + 83 = 31125
Step 376: 31125 + 83 = 31208
Step 377: 31208 + 83 = 31291
Step 378: 31291 + 83 = 31374
Step 379: 31374 + 83 = 31457
Step 380: 31457 + 83 = 31540
Step 381: 31540 + 83 = 31623
Step 382: 31623 + 83 = 31706
Step 383: 31706 + 83 = 31789
Step 384: 31789 + 83 = 31872
Step 385: 31872 + 83 = 31955
Step 386: 31955 + 83 = 32038
Step 387: 32038 + 83 = 32121
Step 388: 32121 + 83 = 32204
Step 389: 32204 + 83 = 32287
Step 390: 32287 + 83 = 32370
Step 391: 32370 + 83 = 32453
Step 392: 32453 + 83 = 32536
Step 393: 32536 + 83 = 32619
Step 394: 32619 + 83 = 32702
Step 395: 32702 + 83 = 32785
Step 396: 32785 + 83 = 32868
Step 397: 32868 + 83 = 32951
Step 398: 32951 + 83 = 33034
Step 399: 33034 + 83 = 33117
Step 400: 33117 + 83 = 33200
Step 401: 33200 + 83 = 33283
Step 402: 33283 + 83 = 33366
Step 403: 33366 + 83 = 33449
Step 404: 33449 + 83 = 33532
Step 405: 33532 + 83 = 33615
Step 406: 33615 + 83 = 33698
Step 407: 33698 + 83 = 33781
Step 408: 33781 + 83 = 33864
Step 409: 33864 + 83 = 33947
Step 410: 33947 + 83 = 34030
Step 411: 34030 + 83 = 34113
Step 412: 34113 + 83 = 34196
Step 413: 34196 + 83 = 34279
Step 414: 34279 + 83 = 34362
Step 415: 34362 + 83 = 34445
Step 416: 34445 + 83 = 34528
Step 417: 34528 + 83 = 34611
Step 418: 34611 + 83 = 34694
Step 419: 34694 + 83 = 34777
Step 420: 34777 + 83 = 34860
Step 421: 34860 + 83 = 34943
Step 422: 34943 + 83 = 35026
Step 423: 35026 + 83 = 35109
Step 424: 35109 + 83 = 35192
Step 425: 35192 + 83 = 35275
Step 426: 35275 + 83 = 35358
Step 427: 35358 + 83 = 35441
Step 428: 35441 + 83 = 35524
Step 429: 35524 + 83 = 35607
Step 430: 35607 + 83 = 35690
Step 431: 35690 + 83 = 35773
Step 432: 35773 + 83 = 35856
Step 433: 35856 + 83 = 35939
Step 434: 35939 + 83 = 36022
Step 435: 36022 + 83 = 36105
Step 436: 36105 + 83 = 36188
Step 437: 36188 + 83 = 36271
Step 438: 36271 + 83 = 36354
Step 439: 36354 + 83 = 36437
Step 440: 36437 + 83 = 36520
Step 441: 36520 + 83 = 36603
Step 442: 36603 + 83 = 36686
Step 443: 36686 + 83 = 36769
Step 444: 36769 + 83 = 36852
Step 445: 36852 + 83 = 36935
Step 446: 36935 + 83 = 37018
Step 447: 37018 + 83 = 37101
Step 448: 37101 + 83 = 37184
Step 449: 37184 + 83 = 37267
Step 450: 37267 + 83 = 37350
Step 451: 37350 + 83 = 37433
Step 452: 37433 + 83 = 37516
Step 453: 37516 + 83 = 37599
Step 454: 37599 + 83 = 37682
Step 455: 37682 + 83 = 37765
Step 456: 37765 + 83 = 37848
Step 457: 37848 + 83 = 37931
Step 458: 37931 + 83 = 38014

So, 83*458 = 38014