Let's roll up our sleeves and solve this. We have 77 and we're going to multiply it by 486, essentially adding 77 to itself 486 times.
Step 1: 0 + 77 = 77
Step 2: 77 + 77 = 154
Step 3: 154 + 77 = 231
Step 4: 231 + 77 = 308
Step 5: 308 + 77 = 385
Step 6: 385 + 77 = 462
Step 7: 462 + 77 = 539
Step 8: 539 + 77 = 616
Step 9: 616 + 77 = 693
Step 10: 693 + 77 = 770
Step 11: 770 + 77 = 847
Step 12: 847 + 77 = 924
Step 13: 924 + 77 = 1001
Step 14: 1001 + 77 = 1078
Step 15: 1078 + 77 = 1155
Step 16: 1155 + 77 = 1232
Step 17: 1232 + 77 = 1309
Step 18: 1309 + 77 = 1386
Step 19: 1386 + 77 = 1463
Step 20: 1463 + 77 = 1540
Step 21: 1540 + 77 = 1617
Step 22: 1617 + 77 = 1694
Step 23: 1694 + 77 = 1771
Step 24: 1771 + 77 = 1848
Step 25: 1848 + 77 = 1925
Step 26: 1925 + 77 = 2002
Step 27: 2002 + 77 = 2079
Step 28: 2079 + 77 = 2156
Step 29: 2156 + 77 = 2233
Step 30: 2233 + 77 = 2310
Step 31: 2310 + 77 = 2387
Step 32: 2387 + 77 = 2464
Step 33: 2464 + 77 = 2541
Step 34: 2541 + 77 = 2618
Step 35: 2618 + 77 = 2695
Step 36: 2695 + 77 = 2772
Step 37: 2772 + 77 = 2849
Step 38: 2849 + 77 = 2926
Step 39: 2926 + 77 = 3003
Step 40: 3003 + 77 = 3080
Step 41: 3080 + 77 = 3157
Step 42: 3157 + 77 = 3234
Step 43: 3234 + 77 = 3311
Step 44: 3311 + 77 = 3388
Step 45: 3388 + 77 = 3465
Step 46: 3465 + 77 = 3542
Step 47: 3542 + 77 = 3619
Step 48: 3619 + 77 = 3696
Step 49: 3696 + 77 = 3773
Step 50: 3773 + 77 = 3850
Step 51: 3850 + 77 = 3927
Step 52: 3927 + 77 = 4004
Step 53: 4004 + 77 = 4081
Step 54: 4081 + 77 = 4158
Step 55: 4158 + 77 = 4235
Step 56: 4235 + 77 = 4312
Step 57: 4312 + 77 = 4389
Step 58: 4389 + 77 = 4466
Step 59: 4466 + 77 = 4543
Step 60: 4543 + 77 = 4620
Step 61: 4620 + 77 = 4697
Step 62: 4697 + 77 = 4774
Step 63: 4774 + 77 = 4851
Step 64: 4851 + 77 = 4928
Step 65: 4928 + 77 = 5005
Step 66: 5005 + 77 = 5082
Step 67: 5082 + 77 = 5159
Step 68: 5159 + 77 = 5236
Step 69: 5236 + 77 = 5313
Step 70: 5313 + 77 = 5390
Step 71: 5390 + 77 = 5467
Step 72: 5467 + 77 = 5544
Step 73: 5544 + 77 = 5621
Step 74: 5621 + 77 = 5698
Step 75: 5698 + 77 = 5775
Step 76: 5775 + 77 = 5852
Step 77: 5852 + 77 = 5929
Step 78: 5929 + 77 = 6006
Step 79: 6006 + 77 = 6083
Step 80: 6083 + 77 = 6160
Step 81: 6160 + 77 = 6237
Step 82: 6237 + 77 = 6314
Step 83: 6314 + 77 = 6391
Step 84: 6391 + 77 = 6468
Step 85: 6468 + 77 = 6545
Step 86: 6545 + 77 = 6622
Step 87: 6622 + 77 = 6699
Step 88: 6699 + 77 = 6776
Step 89: 6776 + 77 = 6853
Step 90: 6853 + 77 = 6930
Step 91: 6930 + 77 = 7007
Step 92: 7007 + 77 = 7084
Step 93: 7084 + 77 = 7161
Step 94: 7161 + 77 = 7238
Step 95: 7238 + 77 = 7315
Step 96: 7315 + 77 = 7392
Step 97: 7392 + 77 = 7469
Step 98: 7469 + 77 = 7546
Step 99: 7546 + 77 = 7623
Step 100: 7623 + 77 = 7700
Step 101: 7700 + 77 = 7777
Step 102: 7777 + 77 = 7854
Step 103: 7854 + 77 = 7931
Step 104: 7931 + 77 = 8008
Step 105: 8008 + 77 = 8085
Step 106: 8085 + 77 = 8162
Step 107: 8162 + 77 = 8239
Step 108: 8239 + 77 = 8316
Step 109: 8316 + 77 = 8393
Step 110: 8393 + 77 = 8470
Step 111: 8470 + 77 = 8547
Step 112: 8547 + 77 = 8624
Step 113: 8624 + 77 = 8701
Step 114: 8701 + 77 = 8778
Step 115: 8778 + 77 = 8855
Step 116: 8855 + 77 = 8932
Step 117: 8932 + 77 = 9009
Step 118: 9009 + 77 = 9086
Step 119: 9086 + 77 = 9163
Step 120: 9163 + 77 = 9240
Step 121: 9240 + 77 = 9317
Step 122: 9317 + 77 = 9394
Step 123: 9394 + 77 = 9471
Step 124: 9471 + 77 = 9548
Step 125: 9548 + 77 = 9625
Step 126: 9625 + 77 = 9702
Step 127: 9702 + 77 = 9779
Step 128: 9779 + 77 = 9856
Step 129: 9856 + 77 = 9933
Step 130: 9933 + 77 = 10010
Step 131: 10010 + 77 = 10087
Step 132: 10087 + 77 = 10164
Step 133: 10164 + 77 = 10241
Step 134: 10241 + 77 = 10318
Step 135: 10318 + 77 = 10395
Step 136: 10395 + 77 = 10472
Step 137: 10472 + 77 = 10549
Step 138: 10549 + 77 = 10626
Step 139: 10626 + 77 = 10703
Step 140: 10703 + 77 = 10780
Step 141: 10780 + 77 = 10857
Step 142: 10857 + 77 = 10934
Step 143: 10934 + 77 = 11011
Step 144: 11011 + 77 = 11088
Step 145: 11088 + 77 = 11165
Step 146: 11165 + 77 = 11242
Step 147: 11242 + 77 = 11319
Step 148: 11319 + 77 = 11396
Step 149: 11396 + 77 = 11473
Step 150: 11473 + 77 = 11550
Step 151: 11550 + 77 = 11627
Step 152: 11627 + 77 = 11704
Step 153: 11704 + 77 = 11781
Step 154: 11781 + 77 = 11858
Step 155: 11858 + 77 = 11935
Step 156: 11935 + 77 = 12012
Step 157: 12012 + 77 = 12089
Step 158: 12089 + 77 = 12166
Step 159: 12166 + 77 = 12243
Step 160: 12243 + 77 = 12320
Step 161: 12320 + 77 = 12397
Step 162: 12397 + 77 = 12474
Step 163: 12474 + 77 = 12551
Step 164: 12551 + 77 = 12628
Step 165: 12628 + 77 = 12705
Step 166: 12705 + 77 = 12782
Step 167: 12782 + 77 = 12859
Step 168: 12859 + 77 = 12936
Step 169: 12936 + 77 = 13013
Step 170: 13013 + 77 = 13090
Step 171: 13090 + 77 = 13167
Step 172: 13167 + 77 = 13244
Step 173: 13244 + 77 = 13321
Step 174: 13321 + 77 = 13398
Step 175: 13398 + 77 = 13475
Step 176: 13475 + 77 = 13552
Step 177: 13552 + 77 = 13629
Step 178: 13629 + 77 = 13706
Step 179: 13706 + 77 = 13783
Step 180: 13783 + 77 = 13860
Step 181: 13860 + 77 = 13937
Step 182: 13937 + 77 = 14014
Step 183: 14014 + 77 = 14091
Step 184: 14091 + 77 = 14168
Step 185: 14168 + 77 = 14245
Step 186: 14245 + 77 = 14322
Step 187: 14322 + 77 = 14399
Step 188: 14399 + 77 = 14476
Step 189: 14476 + 77 = 14553
Step 190: 14553 + 77 = 14630
Step 191: 14630 + 77 = 14707
Step 192: 14707 + 77 = 14784
Step 193: 14784 + 77 = 14861
Step 194: 14861 + 77 = 14938
Step 195: 14938 + 77 = 15015
Step 196: 15015 + 77 = 15092
Step 197: 15092 + 77 = 15169
Step 198: 15169 + 77 = 15246
Step 199: 15246 + 77 = 15323
Step 200: 15323 + 77 = 15400
Step 201: 15400 + 77 = 15477
Step 202: 15477 + 77 = 15554
Step 203: 15554 + 77 = 15631
Step 204: 15631 + 77 = 15708
Step 205: 15708 + 77 = 15785
Step 206: 15785 + 77 = 15862
Step 207: 15862 + 77 = 15939
Step 208: 15939 + 77 = 16016
Step 209: 16016 + 77 = 16093
Step 210: 16093 + 77 = 16170
Step 211: 16170 + 77 = 16247
Step 212: 16247 + 77 = 16324
Step 213: 16324 + 77 = 16401
Step 214: 16401 + 77 = 16478
Step 215: 16478 + 77 = 16555
Step 216: 16555 + 77 = 16632
Step 217: 16632 + 77 = 16709
Step 218: 16709 + 77 = 16786
Step 219: 16786 + 77 = 16863
Step 220: 16863 + 77 = 16940
Step 221: 16940 + 77 = 17017
Step 222: 17017 + 77 = 17094
Step 223: 17094 + 77 = 17171
Step 224: 17171 + 77 = 17248
Step 225: 17248 + 77 = 17325
Step 226: 17325 + 77 = 17402
Step 227: 17402 + 77 = 17479
Step 228: 17479 + 77 = 17556
Step 229: 17556 + 77 = 17633
Step 230: 17633 + 77 = 17710
Step 231: 17710 + 77 = 17787
Step 232: 17787 + 77 = 17864
Step 233: 17864 + 77 = 17941
Step 234: 17941 + 77 = 18018
Step 235: 18018 + 77 = 18095
Step 236: 18095 + 77 = 18172
Step 237: 18172 + 77 = 18249
Step 238: 18249 + 77 = 18326
Step 239: 18326 + 77 = 18403
Step 240: 18403 + 77 = 18480
Step 241: 18480 + 77 = 18557
Step 242: 18557 + 77 = 18634
Step 243: 18634 + 77 = 18711
Step 244: 18711 + 77 = 18788
Step 245: 18788 + 77 = 18865
Step 246: 18865 + 77 = 18942
Step 247: 18942 + 77 = 19019
Step 248: 19019 + 77 = 19096
Step 249: 19096 + 77 = 19173
Step 250: 19173 + 77 = 19250
Step 251: 19250 + 77 = 19327
Step 252: 19327 + 77 = 19404
Step 253: 19404 + 77 = 19481
Step 254: 19481 + 77 = 19558
Step 255: 19558 + 77 = 19635
Step 256: 19635 + 77 = 19712
Step 257: 19712 + 77 = 19789
Step 258: 19789 + 77 = 19866
Step 259: 19866 + 77 = 19943
Step 260: 19943 + 77 = 20020
Step 261: 20020 + 77 = 20097
Step 262: 20097 + 77 = 20174
Step 263: 20174 + 77 = 20251
Step 264: 20251 + 77 = 20328
Step 265: 20328 + 77 = 20405
Step 266: 20405 + 77 = 20482
Step 267: 20482 + 77 = 20559
Step 268: 20559 + 77 = 20636
Step 269: 20636 + 77 = 20713
Step 270: 20713 + 77 = 20790
Step 271: 20790 + 77 = 20867
Step 272: 20867 + 77 = 20944
Step 273: 20944 + 77 = 21021
Step 274: 21021 + 77 = 21098
Step 275: 21098 + 77 = 21175
Step 276: 21175 + 77 = 21252
Step 277: 21252 + 77 = 21329
Step 278: 21329 + 77 = 21406
Step 279: 21406 + 77 = 21483
Step 280: 21483 + 77 = 21560
Step 281: 21560 + 77 = 21637
Step 282: 21637 + 77 = 21714
Step 283: 21714 + 77 = 21791
Step 284: 21791 + 77 = 21868
Step 285: 21868 + 77 = 21945
Step 286: 21945 + 77 = 22022
Step 287: 22022 + 77 = 22099
Step 288: 22099 + 77 = 22176
Step 289: 22176 + 77 = 22253
Step 290: 22253 + 77 = 22330
Step 291: 22330 + 77 = 22407
Step 292: 22407 + 77 = 22484
Step 293: 22484 + 77 = 22561
Step 294: 22561 + 77 = 22638
Step 295: 22638 + 77 = 22715
Step 296: 22715 + 77 = 22792
Step 297: 22792 + 77 = 22869
Step 298: 22869 + 77 = 22946
Step 299: 22946 + 77 = 23023
Step 300: 23023 + 77 = 23100
Step 301: 23100 + 77 = 23177
Step 302: 23177 + 77 = 23254
Step 303: 23254 + 77 = 23331
Step 304: 23331 + 77 = 23408
Step 305: 23408 + 77 = 23485
Step 306: 23485 + 77 = 23562
Step 307: 23562 + 77 = 23639
Step 308: 23639 + 77 = 23716
Step 309: 23716 + 77 = 23793
Step 310: 23793 + 77 = 23870
Step 311: 23870 + 77 = 23947
Step 312: 23947 + 77 = 24024
Step 313: 24024 + 77 = 24101
Step 314: 24101 + 77 = 24178
Step 315: 24178 + 77 = 24255
Step 316: 24255 + 77 = 24332
Step 317: 24332 + 77 = 24409
Step 318: 24409 + 77 = 24486
Step 319: 24486 + 77 = 24563
Step 320: 24563 + 77 = 24640
Step 321: 24640 + 77 = 24717
Step 322: 24717 + 77 = 24794
Step 323: 24794 + 77 = 24871
Step 324: 24871 + 77 = 24948
Step 325: 24948 + 77 = 25025
Step 326: 25025 + 77 = 25102
Step 327: 25102 + 77 = 25179
Step 328: 25179 + 77 = 25256
Step 329: 25256 + 77 = 25333
Step 330: 25333 + 77 = 25410
Step 331: 25410 + 77 = 25487
Step 332: 25487 + 77 = 25564
Step 333: 25564 + 77 = 25641
Step 334: 25641 + 77 = 25718
Step 335: 25718 + 77 = 25795
Step 336: 25795 + 77 = 25872
Step 337: 25872 + 77 = 25949
Step 338: 25949 + 77 = 26026
Step 339: 26026 + 77 = 26103
Step 340: 26103 + 77 = 26180
Step 341: 26180 + 77 = 26257
Step 342: 26257 + 77 = 26334
Step 343: 26334 + 77 = 26411
Step 344: 26411 + 77 = 26488
Step 345: 26488 + 77 = 26565
Step 346: 26565 + 77 = 26642
Step 347: 26642 + 77 = 26719
Step 348: 26719 + 77 = 26796
Step 349: 26796 + 77 = 26873
Step 350: 26873 + 77 = 26950
Step 351: 26950 + 77 = 27027
Step 352: 27027 + 77 = 27104
Step 353: 27104 + 77 = 27181
Step 354: 27181 + 77 = 27258
Step 355: 27258 + 77 = 27335
Step 356: 27335 + 77 = 27412
Step 357: 27412 + 77 = 27489
Step 358: 27489 + 77 = 27566
Step 359: 27566 + 77 = 27643
Step 360: 27643 + 77 = 27720
Step 361: 27720 + 77 = 27797
Step 362: 27797 + 77 = 27874
Step 363: 27874 + 77 = 27951
Step 364: 27951 + 77 = 28028
Step 365: 28028 + 77 = 28105
Step 366: 28105 + 77 = 28182
Step 367: 28182 + 77 = 28259
Step 368: 28259 + 77 = 28336
Step 369: 28336 + 77 = 28413
Step 370: 28413 + 77 = 28490
Step 371: 28490 + 77 = 28567
Step 372: 28567 + 77 = 28644
Step 373: 28644 + 77 = 28721
Step 374: 28721 + 77 = 28798
Step 375: 28798 + 77 = 28875
Step 376: 28875 + 77 = 28952
Step 377: 28952 + 77 = 29029
Step 378: 29029 + 77 = 29106
Step 379: 29106 + 77 = 29183
Step 380: 29183 + 77 = 29260
Step 381: 29260 + 77 = 29337
Step 382: 29337 + 77 = 29414
Step 383: 29414 + 77 = 29491
Step 384: 29491 + 77 = 29568
Step 385: 29568 + 77 = 29645
Step 386: 29645 + 77 = 29722
Step 387: 29722 + 77 = 29799
Step 388: 29799 + 77 = 29876
Step 389: 29876 + 77 = 29953
Step 390: 29953 + 77 = 30030
Step 391: 30030 + 77 = 30107
Step 392: 30107 + 77 = 30184
Step 393: 30184 + 77 = 30261
Step 394: 30261 + 77 = 30338
Step 395: 30338 + 77 = 30415
Step 396: 30415 + 77 = 30492
Step 397: 30492 + 77 = 30569
Step 398: 30569 + 77 = 30646
Step 399: 30646 + 77 = 30723
Step 400: 30723 + 77 = 30800
Step 401: 30800 + 77 = 30877
Step 402: 30877 + 77 = 30954
Step 403: 30954 + 77 = 31031
Step 404: 31031 + 77 = 31108
Step 405: 31108 + 77 = 31185
Step 406: 31185 + 77 = 31262
Step 407: 31262 + 77 = 31339
Step 408: 31339 + 77 = 31416
Step 409: 31416 + 77 = 31493
Step 410: 31493 + 77 = 31570
Step 411: 31570 + 77 = 31647
Step 412: 31647 + 77 = 31724
Step 413: 31724 + 77 = 31801
Step 414: 31801 + 77 = 31878
Step 415: 31878 + 77 = 31955
Step 416: 31955 + 77 = 32032
Step 417: 32032 + 77 = 32109
Step 418: 32109 + 77 = 32186
Step 419: 32186 + 77 = 32263
Step 420: 32263 + 77 = 32340
Step 421: 32340 + 77 = 32417
Step 422: 32417 + 77 = 32494
Step 423: 32494 + 77 = 32571
Step 424: 32571 + 77 = 32648
Step 425: 32648 + 77 = 32725
Step 426: 32725 + 77 = 32802
Step 427: 32802 + 77 = 32879
Step 428: 32879 + 77 = 32956
Step 429: 32956 + 77 = 33033
Step 430: 33033 + 77 = 33110
Step 431: 33110 + 77 = 33187
Step 432: 33187 + 77 = 33264
Step 433: 33264 + 77 = 33341
Step 434: 33341 + 77 = 33418
Step 435: 33418 + 77 = 33495
Step 436: 33495 + 77 = 33572
Step 437: 33572 + 77 = 33649
Step 438: 33649 + 77 = 33726
Step 439: 33726 + 77 = 33803
Step 440: 33803 + 77 = 33880
Step 441: 33880 + 77 = 33957
Step 442: 33957 + 77 = 34034
Step 443: 34034 + 77 = 34111
Step 444: 34111 + 77 = 34188
Step 445: 34188 + 77 = 34265
Step 446: 34265 + 77 = 34342
Step 447: 34342 + 77 = 34419
Step 448: 34419 + 77 = 34496
Step 449: 34496 + 77 = 34573
Step 450: 34573 + 77 = 34650
Step 451: 34650 + 77 = 34727
Step 452: 34727 + 77 = 34804
Step 453: 34804 + 77 = 34881
Step 454: 34881 + 77 = 34958
Step 455: 34958 + 77 = 35035
Step 456: 35035 + 77 = 35112
Step 457: 35112 + 77 = 35189
Step 458: 35189 + 77 = 35266
Step 459: 35266 + 77 = 35343
Step 460: 35343 + 77 = 35420
Step 461: 35420 + 77 = 35497
Step 462: 35497 + 77 = 35574
Step 463: 35574 + 77 = 35651
Step 464: 35651 + 77 = 35728
Step 465: 35728 + 77 = 35805
Step 466: 35805 + 77 = 35882
Step 467: 35882 + 77 = 35959
Step 468: 35959 + 77 = 36036
Step 469: 36036 + 77 = 36113
Step 470: 36113 + 77 = 36190
Step 471: 36190 + 77 = 36267
Step 472: 36267 + 77 = 36344
Step 473: 36344 + 77 = 36421
Step 474: 36421 + 77 = 36498
Step 475: 36498 + 77 = 36575
Step 476: 36575 + 77 = 36652
Step 477: 36652 + 77 = 36729
Step 478: 36729 + 77 = 36806
Step 479: 36806 + 77 = 36883
Step 480: 36883 + 77 = 36960
Step 481: 36960 + 77 = 37037
Step 482: 37037 + 77 = 37114
Step 483: 37114 + 77 = 37191
Step 484: 37191 + 77 = 37268
Step 485: 37268 + 77 = 37345
Step 486: 37345 + 77 = 37422

So, 77*486 = 37422