Let's roll up our sleeves and solve this. We have 277 and we're going to multiply it by 456, essentially adding 277 to itself 456 times.
Step 1: 0 + 277 = 277
Step 2: 277 + 277 = 554
Step 3: 554 + 277 = 831
Step 4: 831 + 277 = 1108
Step 5: 1108 + 277 = 1385
Step 6: 1385 + 277 = 1662
Step 7: 1662 + 277 = 1939
Step 8: 1939 + 277 = 2216
Step 9: 2216 + 277 = 2493
Step 10: 2493 + 277 = 2770
Step 11: 2770 + 277 = 3047
Step 12: 3047 + 277 = 3324
Step 13: 3324 + 277 = 3601
Step 14: 3601 + 277 = 3878
Step 15: 3878 + 277 = 4155
Step 16: 4155 + 277 = 4432
Step 17: 4432 + 277 = 4709
Step 18: 4709 + 277 = 4986
Step 19: 4986 + 277 = 5263
Step 20: 5263 + 277 = 5540
Step 21: 5540 + 277 = 5817
Step 22: 5817 + 277 = 6094
Step 23: 6094 + 277 = 6371
Step 24: 6371 + 277 = 6648
Step 25: 6648 + 277 = 6925
Step 26: 6925 + 277 = 7202
Step 27: 7202 + 277 = 7479
Step 28: 7479 + 277 = 7756
Step 29: 7756 + 277 = 8033
Step 30: 8033 + 277 = 8310
Step 31: 8310 + 277 = 8587
Step 32: 8587 + 277 = 8864
Step 33: 8864 + 277 = 9141
Step 34: 9141 + 277 = 9418
Step 35: 9418 + 277 = 9695
Step 36: 9695 + 277 = 9972
Step 37: 9972 + 277 = 10249
Step 38: 10249 + 277 = 10526
Step 39: 10526 + 277 = 10803
Step 40: 10803 + 277 = 11080
Step 41: 11080 + 277 = 11357
Step 42: 11357 + 277 = 11634
Step 43: 11634 + 277 = 11911
Step 44: 11911 + 277 = 12188
Step 45: 12188 + 277 = 12465
Step 46: 12465 + 277 = 12742
Step 47: 12742 + 277 = 13019
Step 48: 13019 + 277 = 13296
Step 49: 13296 + 277 = 13573
Step 50: 13573 + 277 = 13850
Step 51: 13850 + 277 = 14127
Step 52: 14127 + 277 = 14404
Step 53: 14404 + 277 = 14681
Step 54: 14681 + 277 = 14958
Step 55: 14958 + 277 = 15235
Step 56: 15235 + 277 = 15512
Step 57: 15512 + 277 = 15789
Step 58: 15789 + 277 = 16066
Step 59: 16066 + 277 = 16343
Step 60: 16343 + 277 = 16620
Step 61: 16620 + 277 = 16897
Step 62: 16897 + 277 = 17174
Step 63: 17174 + 277 = 17451
Step 64: 17451 + 277 = 17728
Step 65: 17728 + 277 = 18005
Step 66: 18005 + 277 = 18282
Step 67: 18282 + 277 = 18559
Step 68: 18559 + 277 = 18836
Step 69: 18836 + 277 = 19113
Step 70: 19113 + 277 = 19390
Step 71: 19390 + 277 = 19667
Step 72: 19667 + 277 = 19944
Step 73: 19944 + 277 = 20221
Step 74: 20221 + 277 = 20498
Step 75: 20498 + 277 = 20775
Step 76: 20775 + 277 = 21052
Step 77: 21052 + 277 = 21329
Step 78: 21329 + 277 = 21606
Step 79: 21606 + 277 = 21883
Step 80: 21883 + 277 = 22160
Step 81: 22160 + 277 = 22437
Step 82: 22437 + 277 = 22714
Step 83: 22714 + 277 = 22991
Step 84: 22991 + 277 = 23268
Step 85: 23268 + 277 = 23545
Step 86: 23545 + 277 = 23822
Step 87: 23822 + 277 = 24099
Step 88: 24099 + 277 = 24376
Step 89: 24376 + 277 = 24653
Step 90: 24653 + 277 = 24930
Step 91: 24930 + 277 = 25207
Step 92: 25207 + 277 = 25484
Step 93: 25484 + 277 = 25761
Step 94: 25761 + 277 = 26038
Step 95: 26038 + 277 = 26315
Step 96: 26315 + 277 = 26592
Step 97: 26592 + 277 = 26869
Step 98: 26869 + 277 = 27146
Step 99: 27146 + 277 = 27423
Step 100: 27423 + 277 = 27700
Step 101: 27700 + 277 = 27977
Step 102: 27977 + 277 = 28254
Step 103: 28254 + 277 = 28531
Step 104: 28531 + 277 = 28808
Step 105: 28808 + 277 = 29085
Step 106: 29085 + 277 = 29362
Step 107: 29362 + 277 = 29639
Step 108: 29639 + 277 = 29916
Step 109: 29916 + 277 = 30193
Step 110: 30193 + 277 = 30470
Step 111: 30470 + 277 = 30747
Step 112: 30747 + 277 = 31024
Step 113: 31024 + 277 = 31301
Step 114: 31301 + 277 = 31578
Step 115: 31578 + 277 = 31855
Step 116: 31855 + 277 = 32132
Step 117: 32132 + 277 = 32409
Step 118: 32409 + 277 = 32686
Step 119: 32686 + 277 = 32963
Step 120: 32963 + 277 = 33240
Step 121: 33240 + 277 = 33517
Step 122: 33517 + 277 = 33794
Step 123: 33794 + 277 = 34071
Step 124: 34071 + 277 = 34348
Step 125: 34348 + 277 = 34625
Step 126: 34625 + 277 = 34902
Step 127: 34902 + 277 = 35179
Step 128: 35179 + 277 = 35456
Step 129: 35456 + 277 = 35733
Step 130: 35733 + 277 = 36010
Step 131: 36010 + 277 = 36287
Step 132: 36287 + 277 = 36564
Step 133: 36564 + 277 = 36841
Step 134: 36841 + 277 = 37118
Step 135: 37118 + 277 = 37395
Step 136: 37395 + 277 = 37672
Step 137: 37672 + 277 = 37949
Step 138: 37949 + 277 = 38226
Step 139: 38226 + 277 = 38503
Step 140: 38503 + 277 = 38780
Step 141: 38780 + 277 = 39057
Step 142: 39057 + 277 = 39334
Step 143: 39334 + 277 = 39611
Step 144: 39611 + 277 = 39888
Step 145: 39888 + 277 = 40165
Step 146: 40165 + 277 = 40442
Step 147: 40442 + 277 = 40719
Step 148: 40719 + 277 = 40996
Step 149: 40996 + 277 = 41273
Step 150: 41273 + 277 = 41550
Step 151: 41550 + 277 = 41827
Step 152: 41827 + 277 = 42104
Step 153: 42104 + 277 = 42381
Step 154: 42381 + 277 = 42658
Step 155: 42658 + 277 = 42935
Step 156: 42935 + 277 = 43212
Step 157: 43212 + 277 = 43489
Step 158: 43489 + 277 = 43766
Step 159: 43766 + 277 = 44043
Step 160: 44043 + 277 = 44320
Step 161: 44320 + 277 = 44597
Step 162: 44597 + 277 = 44874
Step 163: 44874 + 277 = 45151
Step 164: 45151 + 277 = 45428
Step 165: 45428 + 277 = 45705
Step 166: 45705 + 277 = 45982
Step 167: 45982 + 277 = 46259
Step 168: 46259 + 277 = 46536
Step 169: 46536 + 277 = 46813
Step 170: 46813 + 277 = 47090
Step 171: 47090 + 277 = 47367
Step 172: 47367 + 277 = 47644
Step 173: 47644 + 277 = 47921
Step 174: 47921 + 277 = 48198
Step 175: 48198 + 277 = 48475
Step 176: 48475 + 277 = 48752
Step 177: 48752 + 277 = 49029
Step 178: 49029 + 277 = 49306
Step 179: 49306 + 277 = 49583
Step 180: 49583 + 277 = 49860
Step 181: 49860 + 277 = 50137
Step 182: 50137 + 277 = 50414
Step 183: 50414 + 277 = 50691
Step 184: 50691 + 277 = 50968
Step 185: 50968 + 277 = 51245
Step 186: 51245 + 277 = 51522
Step 187: 51522 + 277 = 51799
Step 188: 51799 + 277 = 52076
Step 189: 52076 + 277 = 52353
Step 190: 52353 + 277 = 52630
Step 191: 52630 + 277 = 52907
Step 192: 52907 + 277 = 53184
Step 193: 53184 + 277 = 53461
Step 194: 53461 + 277 = 53738
Step 195: 53738 + 277 = 54015
Step 196: 54015 + 277 = 54292
Step 197: 54292 + 277 = 54569
Step 198: 54569 + 277 = 54846
Step 199: 54846 + 277 = 55123
Step 200: 55123 + 277 = 55400
Step 201: 55400 + 277 = 55677
Step 202: 55677 + 277 = 55954
Step 203: 55954 + 277 = 56231
Step 204: 56231 + 277 = 56508
Step 205: 56508 + 277 = 56785
Step 206: 56785 + 277 = 57062
Step 207: 57062 + 277 = 57339
Step 208: 57339 + 277 = 57616
Step 209: 57616 + 277 = 57893
Step 210: 57893 + 277 = 58170
Step 211: 58170 + 277 = 58447
Step 212: 58447 + 277 = 58724
Step 213: 58724 + 277 = 59001
Step 214: 59001 + 277 = 59278
Step 215: 59278 + 277 = 59555
Step 216: 59555 + 277 = 59832
Step 217: 59832 + 277 = 60109
Step 218: 60109 + 277 = 60386
Step 219: 60386 + 277 = 60663
Step 220: 60663 + 277 = 60940
Step 221: 60940 + 277 = 61217
Step 222: 61217 + 277 = 61494
Step 223: 61494 + 277 = 61771
Step 224: 61771 + 277 = 62048
Step 225: 62048 + 277 = 62325
Step 226: 62325 + 277 = 62602
Step 227: 62602 + 277 = 62879
Step 228: 62879 + 277 = 63156
Step 229: 63156 + 277 = 63433
Step 230: 63433 + 277 = 63710
Step 231: 63710 + 277 = 63987
Step 232: 63987 + 277 = 64264
Step 233: 64264 + 277 = 64541
Step 234: 64541 + 277 = 64818
Step 235: 64818 + 277 = 65095
Step 236: 65095 + 277 = 65372
Step 237: 65372 + 277 = 65649
Step 238: 65649 + 277 = 65926
Step 239: 65926 + 277 = 66203
Step 240: 66203 + 277 = 66480
Step 241: 66480 + 277 = 66757
Step 242: 66757 + 277 = 67034
Step 243: 67034 + 277 = 67311
Step 244: 67311 + 277 = 67588
Step 245: 67588 + 277 = 67865
Step 246: 67865 + 277 = 68142
Step 247: 68142 + 277 = 68419
Step 248: 68419 + 277 = 68696
Step 249: 68696 + 277 = 68973
Step 250: 68973 + 277 = 69250
Step 251: 69250 + 277 = 69527
Step 252: 69527 + 277 = 69804
Step 253: 69804 + 277 = 70081
Step 254: 70081 + 277 = 70358
Step 255: 70358 + 277 = 70635
Step 256: 70635 + 277 = 70912
Step 257: 70912 + 277 = 71189
Step 258: 71189 + 277 = 71466
Step 259: 71466 + 277 = 71743
Step 260: 71743 + 277 = 72020
Step 261: 72020 + 277 = 72297
Step 262: 72297 + 277 = 72574
Step 263: 72574 + 277 = 72851
Step 264: 72851 + 277 = 73128
Step 265: 73128 + 277 = 73405
Step 266: 73405 + 277 = 73682
Step 267: 73682 + 277 = 73959
Step 268: 73959 + 277 = 74236
Step 269: 74236 + 277 = 74513
Step 270: 74513 + 277 = 74790
Step 271: 74790 + 277 = 75067
Step 272: 75067 + 277 = 75344
Step 273: 75344 + 277 = 75621
Step 274: 75621 + 277 = 75898
Step 275: 75898 + 277 = 76175
Step 276: 76175 + 277 = 76452
Step 277: 76452 + 277 = 76729
Step 278: 76729 + 277 = 77006
Step 279: 77006 + 277 = 77283
Step 280: 77283 + 277 = 77560
Step 281: 77560 + 277 = 77837
Step 282: 77837 + 277 = 78114
Step 283: 78114 + 277 = 78391
Step 284: 78391 + 277 = 78668
Step 285: 78668 + 277 = 78945
Step 286: 78945 + 277 = 79222
Step 287: 79222 + 277 = 79499
Step 288: 79499 + 277 = 79776
Step 289: 79776 + 277 = 80053
Step 290: 80053 + 277 = 80330
Step 291: 80330 + 277 = 80607
Step 292: 80607 + 277 = 80884
Step 293: 80884 + 277 = 81161
Step 294: 81161 + 277 = 81438
Step 295: 81438 + 277 = 81715
Step 296: 81715 + 277 = 81992
Step 297: 81992 + 277 = 82269
Step 298: 82269 + 277 = 82546
Step 299: 82546 + 277 = 82823
Step 300: 82823 + 277 = 83100
Step 301: 83100 + 277 = 83377
Step 302: 83377 + 277 = 83654
Step 303: 83654 + 277 = 83931
Step 304: 83931 + 277 = 84208
Step 305: 84208 + 277 = 84485
Step 306: 84485 + 277 = 84762
Step 307: 84762 + 277 = 85039
Step 308: 85039 + 277 = 85316
Step 309: 85316 + 277 = 85593
Step 310: 85593 + 277 = 85870
Step 311: 85870 + 277 = 86147
Step 312: 86147 + 277 = 86424
Step 313: 86424 + 277 = 86701
Step 314: 86701 + 277 = 86978
Step 315: 86978 + 277 = 87255
Step 316: 87255 + 277 = 87532
Step 317: 87532 + 277 = 87809
Step 318: 87809 + 277 = 88086
Step 319: 88086 + 277 = 88363
Step 320: 88363 + 277 = 88640
Step 321: 88640 + 277 = 88917
Step 322: 88917 + 277 = 89194
Step 323: 89194 + 277 = 89471
Step 324: 89471 + 277 = 89748
Step 325: 89748 + 277 = 90025
Step 326: 90025 + 277 = 90302
Step 327: 90302 + 277 = 90579
Step 328: 90579 + 277 = 90856
Step 329: 90856 + 277 = 91133
Step 330: 91133 + 277 = 91410
Step 331: 91410 + 277 = 91687
Step 332: 91687 + 277 = 91964
Step 333: 91964 + 277 = 92241
Step 334: 92241 + 277 = 92518
Step 335: 92518 + 277 = 92795
Step 336: 92795 + 277 = 93072
Step 337: 93072 + 277 = 93349
Step 338: 93349 + 277 = 93626
Step 339: 93626 + 277 = 93903
Step 340: 93903 + 277 = 94180
Step 341: 94180 + 277 = 94457
Step 342: 94457 + 277 = 94734
Step 343: 94734 + 277 = 95011
Step 344: 95011 + 277 = 95288
Step 345: 95288 + 277 = 95565
Step 346: 95565 + 277 = 95842
Step 347: 95842 + 277 = 96119
Step 348: 96119 + 277 = 96396
Step 349: 96396 + 277 = 96673
Step 350: 96673 + 277 = 96950
Step 351: 96950 + 277 = 97227
Step 352: 97227 + 277 = 97504
Step 353: 97504 + 277 = 97781
Step 354: 97781 + 277 = 98058
Step 355: 98058 + 277 = 98335
Step 356: 98335 + 277 = 98612
Step 357: 98612 + 277 = 98889
Step 358: 98889 + 277 = 99166
Step 359: 99166 + 277 = 99443
Step 360: 99443 + 277 = 99720
Step 361: 99720 + 277 = 99997
Step 362: 99997 + 277 = 100274
Step 363: 100274 + 277 = 100551
Step 364: 100551 + 277 = 100828
Step 365: 100828 + 277 = 101105
Step 366: 101105 + 277 = 101382
Step 367: 101382 + 277 = 101659
Step 368: 101659 + 277 = 101936
Step 369: 101936 + 277 = 102213
Step 370: 102213 + 277 = 102490
Step 371: 102490 + 277 = 102767
Step 372: 102767 + 277 = 103044
Step 373: 103044 + 277 = 103321
Step 374: 103321 + 277 = 103598
Step 375: 103598 + 277 = 103875
Step 376: 103875 + 277 = 104152
Step 377: 104152 + 277 = 104429
Step 378: 104429 + 277 = 104706
Step 379: 104706 + 277 = 104983
Step 380: 104983 + 277 = 105260
Step 381: 105260 + 277 = 105537
Step 382: 105537 + 277 = 105814
Step 383: 105814 + 277 = 106091
Step 384: 106091 + 277 = 106368
Step 385: 106368 + 277 = 106645
Step 386: 106645 + 277 = 106922
Step 387: 106922 + 277 = 107199
Step 388: 107199 + 277 = 107476
Step 389: 107476 + 277 = 107753
Step 390: 107753 + 277 = 108030
Step 391: 108030 + 277 = 108307
Step 392: 108307 + 277 = 108584
Step 393: 108584 + 277 = 108861
Step 394: 108861 + 277 = 109138
Step 395: 109138 + 277 = 109415
Step 396: 109415 + 277 = 109692
Step 397: 109692 + 277 = 109969
Step 398: 109969 + 277 = 110246
Step 399: 110246 + 277 = 110523
Step 400: 110523 + 277 = 110800
Step 401: 110800 + 277 = 111077
Step 402: 111077 + 277 = 111354
Step 403: 111354 + 277 = 111631
Step 404: 111631 + 277 = 111908
Step 405: 111908 + 277 = 112185
Step 406: 112185 + 277 = 112462
Step 407: 112462 + 277 = 112739
Step 408: 112739 + 277 = 113016
Step 409: 113016 + 277 = 113293
Step 410: 113293 + 277 = 113570
Step 411: 113570 + 277 = 113847
Step 412: 113847 + 277 = 114124
Step 413: 114124 + 277 = 114401
Step 414: 114401 + 277 = 114678
Step 415: 114678 + 277 = 114955
Step 416: 114955 + 277 = 115232
Step 417: 115232 + 277 = 115509
Step 418: 115509 + 277 = 115786
Step 419: 115786 + 277 = 116063
Step 420: 116063 + 277 = 116340
Step 421: 116340 + 277 = 116617
Step 422: 116617 + 277 = 116894
Step 423: 116894 + 277 = 117171
Step 424: 117171 + 277 = 117448
Step 425: 117448 + 277 = 117725
Step 426: 117725 + 277 = 118002
Step 427: 118002 + 277 = 118279
Step 428: 118279 + 277 = 118556
Step 429: 118556 + 277 = 118833
Step 430: 118833 + 277 = 119110
Step 431: 119110 + 277 = 119387
Step 432: 119387 + 277 = 119664
Step 433: 119664 + 277 = 119941
Step 434: 119941 + 277 = 120218
Step 435: 120218 + 277 = 120495
Step 436: 120495 + 277 = 120772
Step 437: 120772 + 277 = 121049
Step 438: 121049 + 277 = 121326
Step 439: 121326 + 277 = 121603
Step 440: 121603 + 277 = 121880
Step 441: 121880 + 277 = 122157
Step 442: 122157 + 277 = 122434
Step 443: 122434 + 277 = 122711
Step 444: 122711 + 277 = 122988
Step 445: 122988 + 277 = 123265
Step 446: 123265 + 277 = 123542
Step 447: 123542 + 277 = 123819
Step 448: 123819 + 277 = 124096
Step 449: 124096 + 277 = 124373
Step 450: 124373 + 277 = 124650
Step 451: 124650 + 277 = 124927
Step 452: 124927 + 277 = 125204
Step 453: 125204 + 277 = 125481
Step 454: 125481 + 277 = 125758
Step 455: 125758 + 277 = 126035
Step 456: 126035 + 277 = 126312

So, 277*456 = 126312