OK, let's work through this together. We're starting with 612 and we're going to multiply it by 451, which means we add 612 to itself 451 times.
Step 1: 0 + 612 = 612
Step 2: 612 + 612 = 1224
Step 3: 1224 + 612 = 1836
Step 4: 1836 + 612 = 2448
Step 5: 2448 + 612 = 3060
Step 6: 3060 + 612 = 3672
Step 7: 3672 + 612 = 4284
Step 8: 4284 + 612 = 4896
Step 9: 4896 + 612 = 5508
Step 10: 5508 + 612 = 6120
Step 11: 6120 + 612 = 6732
Step 12: 6732 + 612 = 7344
Step 13: 7344 + 612 = 7956
Step 14: 7956 + 612 = 8568
Step 15: 8568 + 612 = 9180
Step 16: 9180 + 612 = 9792
Step 17: 9792 + 612 = 10404
Step 18: 10404 + 612 = 11016
Step 19: 11016 + 612 = 11628
Step 20: 11628 + 612 = 12240
Step 21: 12240 + 612 = 12852
Step 22: 12852 + 612 = 13464
Step 23: 13464 + 612 = 14076
Step 24: 14076 + 612 = 14688
Step 25: 14688 + 612 = 15300
Step 26: 15300 + 612 = 15912
Step 27: 15912 + 612 = 16524
Step 28: 16524 + 612 = 17136
Step 29: 17136 + 612 = 17748
Step 30: 17748 + 612 = 18360
Step 31: 18360 + 612 = 18972
Step 32: 18972 + 612 = 19584
Step 33: 19584 + 612 = 20196
Step 34: 20196 + 612 = 20808
Step 35: 20808 + 612 = 21420
Step 36: 21420 + 612 = 22032
Step 37: 22032 + 612 = 22644
Step 38: 22644 + 612 = 23256
Step 39: 23256 + 612 = 23868
Step 40: 23868 + 612 = 24480
Step 41: 24480 + 612 = 25092
Step 42: 25092 + 612 = 25704
Step 43: 25704 + 612 = 26316
Step 44: 26316 + 612 = 26928
Step 45: 26928 + 612 = 27540
Step 46: 27540 + 612 = 28152
Step 47: 28152 + 612 = 28764
Step 48: 28764 + 612 = 29376
Step 49: 29376 + 612 = 29988
Step 50: 29988 + 612 = 30600
Step 51: 30600 + 612 = 31212
Step 52: 31212 + 612 = 31824
Step 53: 31824 + 612 = 32436
Step 54: 32436 + 612 = 33048
Step 55: 33048 + 612 = 33660
Step 56: 33660 + 612 = 34272
Step 57: 34272 + 612 = 34884
Step 58: 34884 + 612 = 35496
Step 59: 35496 + 612 = 36108
Step 60: 36108 + 612 = 36720
Step 61: 36720 + 612 = 37332
Step 62: 37332 + 612 = 37944
Step 63: 37944 + 612 = 38556
Step 64: 38556 + 612 = 39168
Step 65: 39168 + 612 = 39780
Step 66: 39780 + 612 = 40392
Step 67: 40392 + 612 = 41004
Step 68: 41004 + 612 = 41616
Step 69: 41616 + 612 = 42228
Step 70: 42228 + 612 = 42840
Step 71: 42840 + 612 = 43452
Step 72: 43452 + 612 = 44064
Step 73: 44064 + 612 = 44676
Step 74: 44676 + 612 = 45288
Step 75: 45288 + 612 = 45900
Step 76: 45900 + 612 = 46512
Step 77: 46512 + 612 = 47124
Step 78: 47124 + 612 = 47736
Step 79: 47736 + 612 = 48348
Step 80: 48348 + 612 = 48960
Step 81: 48960 + 612 = 49572
Step 82: 49572 + 612 = 50184
Step 83: 50184 + 612 = 50796
Step 84: 50796 + 612 = 51408
Step 85: 51408 + 612 = 52020
Step 86: 52020 + 612 = 52632
Step 87: 52632 + 612 = 53244
Step 88: 53244 + 612 = 53856
Step 89: 53856 + 612 = 54468
Step 90: 54468 + 612 = 55080
Step 91: 55080 + 612 = 55692
Step 92: 55692 + 612 = 56304
Step 93: 56304 + 612 = 56916
Step 94: 56916 + 612 = 57528
Step 95: 57528 + 612 = 58140
Step 96: 58140 + 612 = 58752
Step 97: 58752 + 612 = 59364
Step 98: 59364 + 612 = 59976
Step 99: 59976 + 612 = 60588
Step 100: 60588 + 612 = 61200
Step 101: 61200 + 612 = 61812
Step 102: 61812 + 612 = 62424
Step 103: 62424 + 612 = 63036
Step 104: 63036 + 612 = 63648
Step 105: 63648 + 612 = 64260
Step 106: 64260 + 612 = 64872
Step 107: 64872 + 612 = 65484
Step 108: 65484 + 612 = 66096
Step 109: 66096 + 612 = 66708
Step 110: 66708 + 612 = 67320
Step 111: 67320 + 612 = 67932
Step 112: 67932 + 612 = 68544
Step 113: 68544 + 612 = 69156
Step 114: 69156 + 612 = 69768
Step 115: 69768 + 612 = 70380
Step 116: 70380 + 612 = 70992
Step 117: 70992 + 612 = 71604
Step 118: 71604 + 612 = 72216
Step 119: 72216 + 612 = 72828
Step 120: 72828 + 612 = 73440
Step 121: 73440 + 612 = 74052
Step 122: 74052 + 612 = 74664
Step 123: 74664 + 612 = 75276
Step 124: 75276 + 612 = 75888
Step 125: 75888 + 612 = 76500
Step 126: 76500 + 612 = 77112
Step 127: 77112 + 612 = 77724
Step 128: 77724 + 612 = 78336
Step 129: 78336 + 612 = 78948
Step 130: 78948 + 612 = 79560
Step 131: 79560 + 612 = 80172
Step 132: 80172 + 612 = 80784
Step 133: 80784 + 612 = 81396
Step 134: 81396 + 612 = 82008
Step 135: 82008 + 612 = 82620
Step 136: 82620 + 612 = 83232
Step 137: 83232 + 612 = 83844
Step 138: 83844 + 612 = 84456
Step 139: 84456 + 612 = 85068
Step 140: 85068 + 612 = 85680
Step 141: 85680 + 612 = 86292
Step 142: 86292 + 612 = 86904
Step 143: 86904 + 612 = 87516
Step 144: 87516 + 612 = 88128
Step 145: 88128 + 612 = 88740
Step 146: 88740 + 612 = 89352
Step 147: 89352 + 612 = 89964
Step 148: 89964 + 612 = 90576
Step 149: 90576 + 612 = 91188
Step 150: 91188 + 612 = 91800
Step 151: 91800 + 612 = 92412
Step 152: 92412 + 612 = 93024
Step 153: 93024 + 612 = 93636
Step 154: 93636 + 612 = 94248
Step 155: 94248 + 612 = 94860
Step 156: 94860 + 612 = 95472
Step 157: 95472 + 612 = 96084
Step 158: 96084 + 612 = 96696
Step 159: 96696 + 612 = 97308
Step 160: 97308 + 612 = 97920
Step 161: 97920 + 612 = 98532
Step 162: 98532 + 612 = 99144
Step 163: 99144 + 612 = 99756
Step 164: 99756 + 612 = 100368
Step 165: 100368 + 612 = 100980
Step 166: 100980 + 612 = 101592
Step 167: 101592 + 612 = 102204
Step 168: 102204 + 612 = 102816
Step 169: 102816 + 612 = 103428
Step 170: 103428 + 612 = 104040
Step 171: 104040 + 612 = 104652
Step 172: 104652 + 612 = 105264
Step 173: 105264 + 612 = 105876
Step 174: 105876 + 612 = 106488
Step 175: 106488 + 612 = 107100
Step 176: 107100 + 612 = 107712
Step 177: 107712 + 612 = 108324
Step 178: 108324 + 612 = 108936
Step 179: 108936 + 612 = 109548
Step 180: 109548 + 612 = 110160
Step 181: 110160 + 612 = 110772
Step 182: 110772 + 612 = 111384
Step 183: 111384 + 612 = 111996
Step 184: 111996 + 612 = 112608
Step 185: 112608 + 612 = 113220
Step 186: 113220 + 612 = 113832
Step 187: 113832 + 612 = 114444
Step 188: 114444 + 612 = 115056
Step 189: 115056 + 612 = 115668
Step 190: 115668 + 612 = 116280
Step 191: 116280 + 612 = 116892
Step 192: 116892 + 612 = 117504
Step 193: 117504 + 612 = 118116
Step 194: 118116 + 612 = 118728
Step 195: 118728 + 612 = 119340
Step 196: 119340 + 612 = 119952
Step 197: 119952 + 612 = 120564
Step 198: 120564 + 612 = 121176
Step 199: 121176 + 612 = 121788
Step 200: 121788 + 612 = 122400
Step 201: 122400 + 612 = 123012
Step 202: 123012 + 612 = 123624
Step 203: 123624 + 612 = 124236
Step 204: 124236 + 612 = 124848
Step 205: 124848 + 612 = 125460
Step 206: 125460 + 612 = 126072
Step 207: 126072 + 612 = 126684
Step 208: 126684 + 612 = 127296
Step 209: 127296 + 612 = 127908
Step 210: 127908 + 612 = 128520
Step 211: 128520 + 612 = 129132
Step 212: 129132 + 612 = 129744
Step 213: 129744 + 612 = 130356
Step 214: 130356 + 612 = 130968
Step 215: 130968 + 612 = 131580
Step 216: 131580 + 612 = 132192
Step 217: 132192 + 612 = 132804
Step 218: 132804 + 612 = 133416
Step 219: 133416 + 612 = 134028
Step 220: 134028 + 612 = 134640
Step 221: 134640 + 612 = 135252
Step 222: 135252 + 612 = 135864
Step 223: 135864 + 612 = 136476
Step 224: 136476 + 612 = 137088
Step 225: 137088 + 612 = 137700
Step 226: 137700 + 612 = 138312
Step 227: 138312 + 612 = 138924
Step 228: 138924 + 612 = 139536
Step 229: 139536 + 612 = 140148
Step 230: 140148 + 612 = 140760
Step 231: 140760 + 612 = 141372
Step 232: 141372 + 612 = 141984
Step 233: 141984 + 612 = 142596
Step 234: 142596 + 612 = 143208
Step 235: 143208 + 612 = 143820
Step 236: 143820 + 612 = 144432
Step 237: 144432 + 612 = 145044
Step 238: 145044 + 612 = 145656
Step 239: 145656 + 612 = 146268
Step 240: 146268 + 612 = 146880
Step 241: 146880 + 612 = 147492
Step 242: 147492 + 612 = 148104
Step 243: 148104 + 612 = 148716
Step 244: 148716 + 612 = 149328
Step 245: 149328 + 612 = 149940
Step 246: 149940 + 612 = 150552
Step 247: 150552 + 612 = 151164
Step 248: 151164 + 612 = 151776
Step 249: 151776 + 612 = 152388
Step 250: 152388 + 612 = 153000
Step 251: 153000 + 612 = 153612
Step 252: 153612 + 612 = 154224
Step 253: 154224 + 612 = 154836
Step 254: 154836 + 612 = 155448
Step 255: 155448 + 612 = 156060
Step 256: 156060 + 612 = 156672
Step 257: 156672 + 612 = 157284
Step 258: 157284 + 612 = 157896
Step 259: 157896 + 612 = 158508
Step 260: 158508 + 612 = 159120
Step 261: 159120 + 612 = 159732
Step 262: 159732 + 612 = 160344
Step 263: 160344 + 612 = 160956
Step 264: 160956 + 612 = 161568
Step 265: 161568 + 612 = 162180
Step 266: 162180 + 612 = 162792
Step 267: 162792 + 612 = 163404
Step 268: 163404 + 612 = 164016
Step 269: 164016 + 612 = 164628
Step 270: 164628 + 612 = 165240
Step 271: 165240 + 612 = 165852
Step 272: 165852 + 612 = 166464
Step 273: 166464 + 612 = 167076
Step 274: 167076 + 612 = 167688
Step 275: 167688 + 612 = 168300
Step 276: 168300 + 612 = 168912
Step 277: 168912 + 612 = 169524
Step 278: 169524 + 612 = 170136
Step 279: 170136 + 612 = 170748
Step 280: 170748 + 612 = 171360
Step 281: 171360 + 612 = 171972
Step 282: 171972 + 612 = 172584
Step 283: 172584 + 612 = 173196
Step 284: 173196 + 612 = 173808
Step 285: 173808 + 612 = 174420
Step 286: 174420 + 612 = 175032
Step 287: 175032 + 612 = 175644
Step 288: 175644 + 612 = 176256
Step 289: 176256 + 612 = 176868
Step 290: 176868 + 612 = 177480
Step 291: 177480 + 612 = 178092
Step 292: 178092 + 612 = 178704
Step 293: 178704 + 612 = 179316
Step 294: 179316 + 612 = 179928
Step 295: 179928 + 612 = 180540
Step 296: 180540 + 612 = 181152
Step 297: 181152 + 612 = 181764
Step 298: 181764 + 612 = 182376
Step 299: 182376 + 612 = 182988
Step 300: 182988 + 612 = 183600
Step 301: 183600 + 612 = 184212
Step 302: 184212 + 612 = 184824
Step 303: 184824 + 612 = 185436
Step 304: 185436 + 612 = 186048
Step 305: 186048 + 612 = 186660
Step 306: 186660 + 612 = 187272
Step 307: 187272 + 612 = 187884
Step 308: 187884 + 612 = 188496
Step 309: 188496 + 612 = 189108
Step 310: 189108 + 612 = 189720
Step 311: 189720 + 612 = 190332
Step 312: 190332 + 612 = 190944
Step 313: 190944 + 612 = 191556
Step 314: 191556 + 612 = 192168
Step 315: 192168 + 612 = 192780
Step 316: 192780 + 612 = 193392
Step 317: 193392 + 612 = 194004
Step 318: 194004 + 612 = 194616
Step 319: 194616 + 612 = 195228
Step 320: 195228 + 612 = 195840
Step 321: 195840 + 612 = 196452
Step 322: 196452 + 612 = 197064
Step 323: 197064 + 612 = 197676
Step 324: 197676 + 612 = 198288
Step 325: 198288 + 612 = 198900
Step 326: 198900 + 612 = 199512
Step 327: 199512 + 612 = 200124
Step 328: 200124 + 612 = 200736
Step 329: 200736 + 612 = 201348
Step 330: 201348 + 612 = 201960
Step 331: 201960 + 612 = 202572
Step 332: 202572 + 612 = 203184
Step 333: 203184 + 612 = 203796
Step 334: 203796 + 612 = 204408
Step 335: 204408 + 612 = 205020
Step 336: 205020 + 612 = 205632
Step 337: 205632 + 612 = 206244
Step 338: 206244 + 612 = 206856
Step 339: 206856 + 612 = 207468
Step 340: 207468 + 612 = 208080
Step 341: 208080 + 612 = 208692
Step 342: 208692 + 612 = 209304
Step 343: 209304 + 612 = 209916
Step 344: 209916 + 612 = 210528
Step 345: 210528 + 612 = 211140
Step 346: 211140 + 612 = 211752
Step 347: 211752 + 612 = 212364
Step 348: 212364 + 612 = 212976
Step 349: 212976 + 612 = 213588
Step 350: 213588 + 612 = 214200
Step 351: 214200 + 612 = 214812
Step 352: 214812 + 612 = 215424
Step 353: 215424 + 612 = 216036
Step 354: 216036 + 612 = 216648
Step 355: 216648 + 612 = 217260
Step 356: 217260 + 612 = 217872
Step 357: 217872 + 612 = 218484
Step 358: 218484 + 612 = 219096
Step 359: 219096 + 612 = 219708
Step 360: 219708 + 612 = 220320
Step 361: 220320 + 612 = 220932
Step 362: 220932 + 612 = 221544
Step 363: 221544 + 612 = 222156
Step 364: 222156 + 612 = 222768
Step 365: 222768 + 612 = 223380
Step 366: 223380 + 612 = 223992
Step 367: 223992 + 612 = 224604
Step 368: 224604 + 612 = 225216
Step 369: 225216 + 612 = 225828
Step 370: 225828 + 612 = 226440
Step 371: 226440 + 612 = 227052
Step 372: 227052 + 612 = 227664
Step 373: 227664 + 612 = 228276
Step 374: 228276 + 612 = 228888
Step 375: 228888 + 612 = 229500
Step 376: 229500 + 612 = 230112
Step 377: 230112 + 612 = 230724
Step 378: 230724 + 612 = 231336
Step 379: 231336 + 612 = 231948
Step 380: 231948 + 612 = 232560
Step 381: 232560 + 612 = 233172
Step 382: 233172 + 612 = 233784
Step 383: 233784 + 612 = 234396
Step 384: 234396 + 612 = 235008
Step 385: 235008 + 612 = 235620
Step 386: 235620 + 612 = 236232
Step 387: 236232 + 612 = 236844
Step 388: 236844 + 612 = 237456
Step 389: 237456 + 612 = 238068
Step 390: 238068 + 612 = 238680
Step 391: 238680 + 612 = 239292
Step 392: 239292 + 612 = 239904
Step 393: 239904 + 612 = 240516
Step 394: 240516 + 612 = 241128
Step 395: 241128 + 612 = 241740
Step 396: 241740 + 612 = 242352
Step 397: 242352 + 612 = 242964
Step 398: 242964 + 612 = 243576
Step 399: 243576 + 612 = 244188
Step 400: 244188 + 612 = 244800
Step 401: 244800 + 612 = 245412
Step 402: 245412 + 612 = 246024
Step 403: 246024 + 612 = 246636
Step 404: 246636 + 612 = 247248
Step 405: 247248 + 612 = 247860
Step 406: 247860 + 612 = 248472
Step 407: 248472 + 612 = 249084
Step 408: 249084 + 612 = 249696
Step 409: 249696 + 612 = 250308
Step 410: 250308 + 612 = 250920
Step 411: 250920 + 612 = 251532
Step 412: 251532 + 612 = 252144
Step 413: 252144 + 612 = 252756
Step 414: 252756 + 612 = 253368
Step 415: 253368 + 612 = 253980
Step 416: 253980 + 612 = 254592
Step 417: 254592 + 612 = 255204
Step 418: 255204 + 612 = 255816
Step 419: 255816 + 612 = 256428
Step 420: 256428 + 612 = 257040
Step 421: 257040 + 612 = 257652
Step 422: 257652 + 612 = 258264
Step 423: 258264 + 612 = 258876
Step 424: 258876 + 612 = 259488
Step 425: 259488 + 612 = 260100
Step 426: 260100 + 612 = 260712
Step 427: 260712 + 612 = 261324
Step 428: 261324 + 612 = 261936
Step 429: 261936 + 612 = 262548
Step 430: 262548 + 612 = 263160
Step 431: 263160 + 612 = 263772
Step 432: 263772 + 612 = 264384
Step 433: 264384 + 612 = 264996
Step 434: 264996 + 612 = 265608
Step 435: 265608 + 612 = 266220
Step 436: 266220 + 612 = 266832
Step 437: 266832 + 612 = 267444
Step 438: 267444 + 612 = 268056
Step 439: 268056 + 612 = 268668
Step 440: 268668 + 612 = 269280
Step 441: 269280 + 612 = 269892
Step 442: 269892 + 612 = 270504
Step 443: 270504 + 612 = 271116
Step 444: 271116 + 612 = 271728
Step 445: 271728 + 612 = 272340
Step 446: 272340 + 612 = 272952
Step 447: 272952 + 612 = 273564
Step 448: 273564 + 612 = 274176
Step 449: 274176 + 612 = 274788
Step 450: 274788 + 612 = 275400
Step 451: 275400 + 612 = 276012

So, 612*451 = 276012