OK, let's work through this together. We're starting with 309 and we're going to multiply it by 496, which means we add 309 to itself 496 times.
Step 1: 0 + 309 = 309
Step 2: 309 + 309 = 618
Step 3: 618 + 309 = 927
Step 4: 927 + 309 = 1236
Step 5: 1236 + 309 = 1545
Step 6: 1545 + 309 = 1854
Step 7: 1854 + 309 = 2163
Step 8: 2163 + 309 = 2472
Step 9: 2472 + 309 = 2781
Step 10: 2781 + 309 = 3090
Step 11: 3090 + 309 = 3399
Step 12: 3399 + 309 = 3708
Step 13: 3708 + 309 = 4017
Step 14: 4017 + 309 = 4326
Step 15: 4326 + 309 = 4635
Step 16: 4635 + 309 = 4944
Step 17: 4944 + 309 = 5253
Step 18: 5253 + 309 = 5562
Step 19: 5562 + 309 = 5871
Step 20: 5871 + 309 = 6180
Step 21: 6180 + 309 = 6489
Step 22: 6489 + 309 = 6798
Step 23: 6798 + 309 = 7107
Step 24: 7107 + 309 = 7416
Step 25: 7416 + 309 = 7725
Step 26: 7725 + 309 = 8034
Step 27: 8034 + 309 = 8343
Step 28: 8343 + 309 = 8652
Step 29: 8652 + 309 = 8961
Step 30: 8961 + 309 = 9270
Step 31: 9270 + 309 = 9579
Step 32: 9579 + 309 = 9888
Step 33: 9888 + 309 = 10197
Step 34: 10197 + 309 = 10506
Step 35: 10506 + 309 = 10815
Step 36: 10815 + 309 = 11124
Step 37: 11124 + 309 = 11433
Step 38: 11433 + 309 = 11742
Step 39: 11742 + 309 = 12051
Step 40: 12051 + 309 = 12360
Step 41: 12360 + 309 = 12669
Step 42: 12669 + 309 = 12978
Step 43: 12978 + 309 = 13287
Step 44: 13287 + 309 = 13596
Step 45: 13596 + 309 = 13905
Step 46: 13905 + 309 = 14214
Step 47: 14214 + 309 = 14523
Step 48: 14523 + 309 = 14832
Step 49: 14832 + 309 = 15141
Step 50: 15141 + 309 = 15450
Step 51: 15450 + 309 = 15759
Step 52: 15759 + 309 = 16068
Step 53: 16068 + 309 = 16377
Step 54: 16377 + 309 = 16686
Step 55: 16686 + 309 = 16995
Step 56: 16995 + 309 = 17304
Step 57: 17304 + 309 = 17613
Step 58: 17613 + 309 = 17922
Step 59: 17922 + 309 = 18231
Step 60: 18231 + 309 = 18540
Step 61: 18540 + 309 = 18849
Step 62: 18849 + 309 = 19158
Step 63: 19158 + 309 = 19467
Step 64: 19467 + 309 = 19776
Step 65: 19776 + 309 = 20085
Step 66: 20085 + 309 = 20394
Step 67: 20394 + 309 = 20703
Step 68: 20703 + 309 = 21012
Step 69: 21012 + 309 = 21321
Step 70: 21321 + 309 = 21630
Step 71: 21630 + 309 = 21939
Step 72: 21939 + 309 = 22248
Step 73: 22248 + 309 = 22557
Step 74: 22557 + 309 = 22866
Step 75: 22866 + 309 = 23175
Step 76: 23175 + 309 = 23484
Step 77: 23484 + 309 = 23793
Step 78: 23793 + 309 = 24102
Step 79: 24102 + 309 = 24411
Step 80: 24411 + 309 = 24720
Step 81: 24720 + 309 = 25029
Step 82: 25029 + 309 = 25338
Step 83: 25338 + 309 = 25647
Step 84: 25647 + 309 = 25956
Step 85: 25956 + 309 = 26265
Step 86: 26265 + 309 = 26574
Step 87: 26574 + 309 = 26883
Step 88: 26883 + 309 = 27192
Step 89: 27192 + 309 = 27501
Step 90: 27501 + 309 = 27810
Step 91: 27810 + 309 = 28119
Step 92: 28119 + 309 = 28428
Step 93: 28428 + 309 = 28737
Step 94: 28737 + 309 = 29046
Step 95: 29046 + 309 = 29355
Step 96: 29355 + 309 = 29664
Step 97: 29664 + 309 = 29973
Step 98: 29973 + 309 = 30282
Step 99: 30282 + 309 = 30591
Step 100: 30591 + 309 = 30900
Step 101: 30900 + 309 = 31209
Step 102: 31209 + 309 = 31518
Step 103: 31518 + 309 = 31827
Step 104: 31827 + 309 = 32136
Step 105: 32136 + 309 = 32445
Step 106: 32445 + 309 = 32754
Step 107: 32754 + 309 = 33063
Step 108: 33063 + 309 = 33372
Step 109: 33372 + 309 = 33681
Step 110: 33681 + 309 = 33990
Step 111: 33990 + 309 = 34299
Step 112: 34299 + 309 = 34608
Step 113: 34608 + 309 = 34917
Step 114: 34917 + 309 = 35226
Step 115: 35226 + 309 = 35535
Step 116: 35535 + 309 = 35844
Step 117: 35844 + 309 = 36153
Step 118: 36153 + 309 = 36462
Step 119: 36462 + 309 = 36771
Step 120: 36771 + 309 = 37080
Step 121: 37080 + 309 = 37389
Step 122: 37389 + 309 = 37698
Step 123: 37698 + 309 = 38007
Step 124: 38007 + 309 = 38316
Step 125: 38316 + 309 = 38625
Step 126: 38625 + 309 = 38934
Step 127: 38934 + 309 = 39243
Step 128: 39243 + 309 = 39552
Step 129: 39552 + 309 = 39861
Step 130: 39861 + 309 = 40170
Step 131: 40170 + 309 = 40479
Step 132: 40479 + 309 = 40788
Step 133: 40788 + 309 = 41097
Step 134: 41097 + 309 = 41406
Step 135: 41406 + 309 = 41715
Step 136: 41715 + 309 = 42024
Step 137: 42024 + 309 = 42333
Step 138: 42333 + 309 = 42642
Step 139: 42642 + 309 = 42951
Step 140: 42951 + 309 = 43260
Step 141: 43260 + 309 = 43569
Step 142: 43569 + 309 = 43878
Step 143: 43878 + 309 = 44187
Step 144: 44187 + 309 = 44496
Step 145: 44496 + 309 = 44805
Step 146: 44805 + 309 = 45114
Step 147: 45114 + 309 = 45423
Step 148: 45423 + 309 = 45732
Step 149: 45732 + 309 = 46041
Step 150: 46041 + 309 = 46350
Step 151: 46350 + 309 = 46659
Step 152: 46659 + 309 = 46968
Step 153: 46968 + 309 = 47277
Step 154: 47277 + 309 = 47586
Step 155: 47586 + 309 = 47895
Step 156: 47895 + 309 = 48204
Step 157: 48204 + 309 = 48513
Step 158: 48513 + 309 = 48822
Step 159: 48822 + 309 = 49131
Step 160: 49131 + 309 = 49440
Step 161: 49440 + 309 = 49749
Step 162: 49749 + 309 = 50058
Step 163: 50058 + 309 = 50367
Step 164: 50367 + 309 = 50676
Step 165: 50676 + 309 = 50985
Step 166: 50985 + 309 = 51294
Step 167: 51294 + 309 = 51603
Step 168: 51603 + 309 = 51912
Step 169: 51912 + 309 = 52221
Step 170: 52221 + 309 = 52530
Step 171: 52530 + 309 = 52839
Step 172: 52839 + 309 = 53148
Step 173: 53148 + 309 = 53457
Step 174: 53457 + 309 = 53766
Step 175: 53766 + 309 = 54075
Step 176: 54075 + 309 = 54384
Step 177: 54384 + 309 = 54693
Step 178: 54693 + 309 = 55002
Step 179: 55002 + 309 = 55311
Step 180: 55311 + 309 = 55620
Step 181: 55620 + 309 = 55929
Step 182: 55929 + 309 = 56238
Step 183: 56238 + 309 = 56547
Step 184: 56547 + 309 = 56856
Step 185: 56856 + 309 = 57165
Step 186: 57165 + 309 = 57474
Step 187: 57474 + 309 = 57783
Step 188: 57783 + 309 = 58092
Step 189: 58092 + 309 = 58401
Step 190: 58401 + 309 = 58710
Step 191: 58710 + 309 = 59019
Step 192: 59019 + 309 = 59328
Step 193: 59328 + 309 = 59637
Step 194: 59637 + 309 = 59946
Step 195: 59946 + 309 = 60255
Step 196: 60255 + 309 = 60564
Step 197: 60564 + 309 = 60873
Step 198: 60873 + 309 = 61182
Step 199: 61182 + 309 = 61491
Step 200: 61491 + 309 = 61800
Step 201: 61800 + 309 = 62109
Step 202: 62109 + 309 = 62418
Step 203: 62418 + 309 = 62727
Step 204: 62727 + 309 = 63036
Step 205: 63036 + 309 = 63345
Step 206: 63345 + 309 = 63654
Step 207: 63654 + 309 = 63963
Step 208: 63963 + 309 = 64272
Step 209: 64272 + 309 = 64581
Step 210: 64581 + 309 = 64890
Step 211: 64890 + 309 = 65199
Step 212: 65199 + 309 = 65508
Step 213: 65508 + 309 = 65817
Step 214: 65817 + 309 = 66126
Step 215: 66126 + 309 = 66435
Step 216: 66435 + 309 = 66744
Step 217: 66744 + 309 = 67053
Step 218: 67053 + 309 = 67362
Step 219: 67362 + 309 = 67671
Step 220: 67671 + 309 = 67980
Step 221: 67980 + 309 = 68289
Step 222: 68289 + 309 = 68598
Step 223: 68598 + 309 = 68907
Step 224: 68907 + 309 = 69216
Step 225: 69216 + 309 = 69525
Step 226: 69525 + 309 = 69834
Step 227: 69834 + 309 = 70143
Step 228: 70143 + 309 = 70452
Step 229: 70452 + 309 = 70761
Step 230: 70761 + 309 = 71070
Step 231: 71070 + 309 = 71379
Step 232: 71379 + 309 = 71688
Step 233: 71688 + 309 = 71997
Step 234: 71997 + 309 = 72306
Step 235: 72306 + 309 = 72615
Step 236: 72615 + 309 = 72924
Step 237: 72924 + 309 = 73233
Step 238: 73233 + 309 = 73542
Step 239: 73542 + 309 = 73851
Step 240: 73851 + 309 = 74160
Step 241: 74160 + 309 = 74469
Step 242: 74469 + 309 = 74778
Step 243: 74778 + 309 = 75087
Step 244: 75087 + 309 = 75396
Step 245: 75396 + 309 = 75705
Step 246: 75705 + 309 = 76014
Step 247: 76014 + 309 = 76323
Step 248: 76323 + 309 = 76632
Step 249: 76632 + 309 = 76941
Step 250: 76941 + 309 = 77250
Step 251: 77250 + 309 = 77559
Step 252: 77559 + 309 = 77868
Step 253: 77868 + 309 = 78177
Step 254: 78177 + 309 = 78486
Step 255: 78486 + 309 = 78795
Step 256: 78795 + 309 = 79104
Step 257: 79104 + 309 = 79413
Step 258: 79413 + 309 = 79722
Step 259: 79722 + 309 = 80031
Step 260: 80031 + 309 = 80340
Step 261: 80340 + 309 = 80649
Step 262: 80649 + 309 = 80958
Step 263: 80958 + 309 = 81267
Step 264: 81267 + 309 = 81576
Step 265: 81576 + 309 = 81885
Step 266: 81885 + 309 = 82194
Step 267: 82194 + 309 = 82503
Step 268: 82503 + 309 = 82812
Step 269: 82812 + 309 = 83121
Step 270: 83121 + 309 = 83430
Step 271: 83430 + 309 = 83739
Step 272: 83739 + 309 = 84048
Step 273: 84048 + 309 = 84357
Step 274: 84357 + 309 = 84666
Step 275: 84666 + 309 = 84975
Step 276: 84975 + 309 = 85284
Step 277: 85284 + 309 = 85593
Step 278: 85593 + 309 = 85902
Step 279: 85902 + 309 = 86211
Step 280: 86211 + 309 = 86520
Step 281: 86520 + 309 = 86829
Step 282: 86829 + 309 = 87138
Step 283: 87138 + 309 = 87447
Step 284: 87447 + 309 = 87756
Step 285: 87756 + 309 = 88065
Step 286: 88065 + 309 = 88374
Step 287: 88374 + 309 = 88683
Step 288: 88683 + 309 = 88992
Step 289: 88992 + 309 = 89301
Step 290: 89301 + 309 = 89610
Step 291: 89610 + 309 = 89919
Step 292: 89919 + 309 = 90228
Step 293: 90228 + 309 = 90537
Step 294: 90537 + 309 = 90846
Step 295: 90846 + 309 = 91155
Step 296: 91155 + 309 = 91464
Step 297: 91464 + 309 = 91773
Step 298: 91773 + 309 = 92082
Step 299: 92082 + 309 = 92391
Step 300: 92391 + 309 = 92700
Step 301: 92700 + 309 = 93009
Step 302: 93009 + 309 = 93318
Step 303: 93318 + 309 = 93627
Step 304: 93627 + 309 = 93936
Step 305: 93936 + 309 = 94245
Step 306: 94245 + 309 = 94554
Step 307: 94554 + 309 = 94863
Step 308: 94863 + 309 = 95172
Step 309: 95172 + 309 = 95481
Step 310: 95481 + 309 = 95790
Step 311: 95790 + 309 = 96099
Step 312: 96099 + 309 = 96408
Step 313: 96408 + 309 = 96717
Step 314: 96717 + 309 = 97026
Step 315: 97026 + 309 = 97335
Step 316: 97335 + 309 = 97644
Step 317: 97644 + 309 = 97953
Step 318: 97953 + 309 = 98262
Step 319: 98262 + 309 = 98571
Step 320: 98571 + 309 = 98880
Step 321: 98880 + 309 = 99189
Step 322: 99189 + 309 = 99498
Step 323: 99498 + 309 = 99807
Step 324: 99807 + 309 = 100116
Step 325: 100116 + 309 = 100425
Step 326: 100425 + 309 = 100734
Step 327: 100734 + 309 = 101043
Step 328: 101043 + 309 = 101352
Step 329: 101352 + 309 = 101661
Step 330: 101661 + 309 = 101970
Step 331: 101970 + 309 = 102279
Step 332: 102279 + 309 = 102588
Step 333: 102588 + 309 = 102897
Step 334: 102897 + 309 = 103206
Step 335: 103206 + 309 = 103515
Step 336: 103515 + 309 = 103824
Step 337: 103824 + 309 = 104133
Step 338: 104133 + 309 = 104442
Step 339: 104442 + 309 = 104751
Step 340: 104751 + 309 = 105060
Step 341: 105060 + 309 = 105369
Step 342: 105369 + 309 = 105678
Step 343: 105678 + 309 = 105987
Step 344: 105987 + 309 = 106296
Step 345: 106296 + 309 = 106605
Step 346: 106605 + 309 = 106914
Step 347: 106914 + 309 = 107223
Step 348: 107223 + 309 = 107532
Step 349: 107532 + 309 = 107841
Step 350: 107841 + 309 = 108150
Step 351: 108150 + 309 = 108459
Step 352: 108459 + 309 = 108768
Step 353: 108768 + 309 = 109077
Step 354: 109077 + 309 = 109386
Step 355: 109386 + 309 = 109695
Step 356: 109695 + 309 = 110004
Step 357: 110004 + 309 = 110313
Step 358: 110313 + 309 = 110622
Step 359: 110622 + 309 = 110931
Step 360: 110931 + 309 = 111240
Step 361: 111240 + 309 = 111549
Step 362: 111549 + 309 = 111858
Step 363: 111858 + 309 = 112167
Step 364: 112167 + 309 = 112476
Step 365: 112476 + 309 = 112785
Step 366: 112785 + 309 = 113094
Step 367: 113094 + 309 = 113403
Step 368: 113403 + 309 = 113712
Step 369: 113712 + 309 = 114021
Step 370: 114021 + 309 = 114330
Step 371: 114330 + 309 = 114639
Step 372: 114639 + 309 = 114948
Step 373: 114948 + 309 = 115257
Step 374: 115257 + 309 = 115566
Step 375: 115566 + 309 = 115875
Step 376: 115875 + 309 = 116184
Step 377: 116184 + 309 = 116493
Step 378: 116493 + 309 = 116802
Step 379: 116802 + 309 = 117111
Step 380: 117111 + 309 = 117420
Step 381: 117420 + 309 = 117729
Step 382: 117729 + 309 = 118038
Step 383: 118038 + 309 = 118347
Step 384: 118347 + 309 = 118656
Step 385: 118656 + 309 = 118965
Step 386: 118965 + 309 = 119274
Step 387: 119274 + 309 = 119583
Step 388: 119583 + 309 = 119892
Step 389: 119892 + 309 = 120201
Step 390: 120201 + 309 = 120510
Step 391: 120510 + 309 = 120819
Step 392: 120819 + 309 = 121128
Step 393: 121128 + 309 = 121437
Step 394: 121437 + 309 = 121746
Step 395: 121746 + 309 = 122055
Step 396: 122055 + 309 = 122364
Step 397: 122364 + 309 = 122673
Step 398: 122673 + 309 = 122982
Step 399: 122982 + 309 = 123291
Step 400: 123291 + 309 = 123600
Step 401: 123600 + 309 = 123909
Step 402: 123909 + 309 = 124218
Step 403: 124218 + 309 = 124527
Step 404: 124527 + 309 = 124836
Step 405: 124836 + 309 = 125145
Step 406: 125145 + 309 = 125454
Step 407: 125454 + 309 = 125763
Step 408: 125763 + 309 = 126072
Step 409: 126072 + 309 = 126381
Step 410: 126381 + 309 = 126690
Step 411: 126690 + 309 = 126999
Step 412: 126999 + 309 = 127308
Step 413: 127308 + 309 = 127617
Step 414: 127617 + 309 = 127926
Step 415: 127926 + 309 = 128235
Step 416: 128235 + 309 = 128544
Step 417: 128544 + 309 = 128853
Step 418: 128853 + 309 = 129162
Step 419: 129162 + 309 = 129471
Step 420: 129471 + 309 = 129780
Step 421: 129780 + 309 = 130089
Step 422: 130089 + 309 = 130398
Step 423: 130398 + 309 = 130707
Step 424: 130707 + 309 = 131016
Step 425: 131016 + 309 = 131325
Step 426: 131325 + 309 = 131634
Step 427: 131634 + 309 = 131943
Step 428: 131943 + 309 = 132252
Step 429: 132252 + 309 = 132561
Step 430: 132561 + 309 = 132870
Step 431: 132870 + 309 = 133179
Step 432: 133179 + 309 = 133488
Step 433: 133488 + 309 = 133797
Step 434: 133797 + 309 = 134106
Step 435: 134106 + 309 = 134415
Step 436: 134415 + 309 = 134724
Step 437: 134724 + 309 = 135033
Step 438: 135033 + 309 = 135342
Step 439: 135342 + 309 = 135651
Step 440: 135651 + 309 = 135960
Step 441: 135960 + 309 = 136269
Step 442: 136269 + 309 = 136578
Step 443: 136578 + 309 = 136887
Step 444: 136887 + 309 = 137196
Step 445: 137196 + 309 = 137505
Step 446: 137505 + 309 = 137814
Step 447: 137814 + 309 = 138123
Step 448: 138123 + 309 = 138432
Step 449: 138432 + 309 = 138741
Step 450: 138741 + 309 = 139050
Step 451: 139050 + 309 = 139359
Step 452: 139359 + 309 = 139668
Step 453: 139668 + 309 = 139977
Step 454: 139977 + 309 = 140286
Step 455: 140286 + 309 = 140595
Step 456: 140595 + 309 = 140904
Step 457: 140904 + 309 = 141213
Step 458: 141213 + 309 = 141522
Step 459: 141522 + 309 = 141831
Step 460: 141831 + 309 = 142140
Step 461: 142140 + 309 = 142449
Step 462: 142449 + 309 = 142758
Step 463: 142758 + 309 = 143067
Step 464: 143067 + 309 = 143376
Step 465: 143376 + 309 = 143685
Step 466: 143685 + 309 = 143994
Step 467: 143994 + 309 = 144303
Step 468: 144303 + 309 = 144612
Step 469: 144612 + 309 = 144921
Step 470: 144921 + 309 = 145230
Step 471: 145230 + 309 = 145539
Step 472: 145539 + 309 = 145848
Step 473: 145848 + 309 = 146157
Step 474: 146157 + 309 = 146466
Step 475: 146466 + 309 = 146775
Step 476: 146775 + 309 = 147084
Step 477: 147084 + 309 = 147393
Step 478: 147393 + 309 = 147702
Step 479: 147702 + 309 = 148011
Step 480: 148011 + 309 = 148320
Step 481: 148320 + 309 = 148629
Step 482: 148629 + 309 = 148938
Step 483: 148938 + 309 = 149247
Step 484: 149247 + 309 = 149556
Step 485: 149556 + 309 = 149865
Step 486: 149865 + 309 = 150174
Step 487: 150174 + 309 = 150483
Step 488: 150483 + 309 = 150792
Step 489: 150792 + 309 = 151101
Step 490: 151101 + 309 = 151410
Step 491: 151410 + 309 = 151719
Step 492: 151719 + 309 = 152028
Step 493: 152028 + 309 = 152337
Step 494: 152337 + 309 = 152646
Step 495: 152646 + 309 = 152955
Step 496: 152955 + 309 = 153264

So, 309*496 = 153264