OK, let's crack this. We're given 438 and our task is to multiply it by 490. Essentially, we'll be adding 438 to itself 490 times.
Step 1: 0 + 438 = 438
Step 2: 438 + 438 = 876
Step 3: 876 + 438 = 1314
Step 4: 1314 + 438 = 1752
Step 5: 1752 + 438 = 2190
Step 6: 2190 + 438 = 2628
Step 7: 2628 + 438 = 3066
Step 8: 3066 + 438 = 3504
Step 9: 3504 + 438 = 3942
Step 10: 3942 + 438 = 4380
Step 11: 4380 + 438 = 4818
Step 12: 4818 + 438 = 5256
Step 13: 5256 + 438 = 5694
Step 14: 5694 + 438 = 6132
Step 15: 6132 + 438 = 6570
Step 16: 6570 + 438 = 7008
Step 17: 7008 + 438 = 7446
Step 18: 7446 + 438 = 7884
Step 19: 7884 + 438 = 8322
Step 20: 8322 + 438 = 8760
Step 21: 8760 + 438 = 9198
Step 22: 9198 + 438 = 9636
Step 23: 9636 + 438 = 10074
Step 24: 10074 + 438 = 10512
Step 25: 10512 + 438 = 10950
Step 26: 10950 + 438 = 11388
Step 27: 11388 + 438 = 11826
Step 28: 11826 + 438 = 12264
Step 29: 12264 + 438 = 12702
Step 30: 12702 + 438 = 13140
Step 31: 13140 + 438 = 13578
Step 32: 13578 + 438 = 14016
Step 33: 14016 + 438 = 14454
Step 34: 14454 + 438 = 14892
Step 35: 14892 + 438 = 15330
Step 36: 15330 + 438 = 15768
Step 37: 15768 + 438 = 16206
Step 38: 16206 + 438 = 16644
Step 39: 16644 + 438 = 17082
Step 40: 17082 + 438 = 17520
Step 41: 17520 + 438 = 17958
Step 42: 17958 + 438 = 18396
Step 43: 18396 + 438 = 18834
Step 44: 18834 + 438 = 19272
Step 45: 19272 + 438 = 19710
Step 46: 19710 + 438 = 20148
Step 47: 20148 + 438 = 20586
Step 48: 20586 + 438 = 21024
Step 49: 21024 + 438 = 21462
Step 50: 21462 + 438 = 21900
Step 51: 21900 + 438 = 22338
Step 52: 22338 + 438 = 22776
Step 53: 22776 + 438 = 23214
Step 54: 23214 + 438 = 23652
Step 55: 23652 + 438 = 24090
Step 56: 24090 + 438 = 24528
Step 57: 24528 + 438 = 24966
Step 58: 24966 + 438 = 25404
Step 59: 25404 + 438 = 25842
Step 60: 25842 + 438 = 26280
Step 61: 26280 + 438 = 26718
Step 62: 26718 + 438 = 27156
Step 63: 27156 + 438 = 27594
Step 64: 27594 + 438 = 28032
Step 65: 28032 + 438 = 28470
Step 66: 28470 + 438 = 28908
Step 67: 28908 + 438 = 29346
Step 68: 29346 + 438 = 29784
Step 69: 29784 + 438 = 30222
Step 70: 30222 + 438 = 30660
Step 71: 30660 + 438 = 31098
Step 72: 31098 + 438 = 31536
Step 73: 31536 + 438 = 31974
Step 74: 31974 + 438 = 32412
Step 75: 32412 + 438 = 32850
Step 76: 32850 + 438 = 33288
Step 77: 33288 + 438 = 33726
Step 78: 33726 + 438 = 34164
Step 79: 34164 + 438 = 34602
Step 80: 34602 + 438 = 35040
Step 81: 35040 + 438 = 35478
Step 82: 35478 + 438 = 35916
Step 83: 35916 + 438 = 36354
Step 84: 36354 + 438 = 36792
Step 85: 36792 + 438 = 37230
Step 86: 37230 + 438 = 37668
Step 87: 37668 + 438 = 38106
Step 88: 38106 + 438 = 38544
Step 89: 38544 + 438 = 38982
Step 90: 38982 + 438 = 39420
Step 91: 39420 + 438 = 39858
Step 92: 39858 + 438 = 40296
Step 93: 40296 + 438 = 40734
Step 94: 40734 + 438 = 41172
Step 95: 41172 + 438 = 41610
Step 96: 41610 + 438 = 42048
Step 97: 42048 + 438 = 42486
Step 98: 42486 + 438 = 42924
Step 99: 42924 + 438 = 43362
Step 100: 43362 + 438 = 43800
Step 101: 43800 + 438 = 44238
Step 102: 44238 + 438 = 44676
Step 103: 44676 + 438 = 45114
Step 104: 45114 + 438 = 45552
Step 105: 45552 + 438 = 45990
Step 106: 45990 + 438 = 46428
Step 107: 46428 + 438 = 46866
Step 108: 46866 + 438 = 47304
Step 109: 47304 + 438 = 47742
Step 110: 47742 + 438 = 48180
Step 111: 48180 + 438 = 48618
Step 112: 48618 + 438 = 49056
Step 113: 49056 + 438 = 49494
Step 114: 49494 + 438 = 49932
Step 115: 49932 + 438 = 50370
Step 116: 50370 + 438 = 50808
Step 117: 50808 + 438 = 51246
Step 118: 51246 + 438 = 51684
Step 119: 51684 + 438 = 52122
Step 120: 52122 + 438 = 52560
Step 121: 52560 + 438 = 52998
Step 122: 52998 + 438 = 53436
Step 123: 53436 + 438 = 53874
Step 124: 53874 + 438 = 54312
Step 125: 54312 + 438 = 54750
Step 126: 54750 + 438 = 55188
Step 127: 55188 + 438 = 55626
Step 128: 55626 + 438 = 56064
Step 129: 56064 + 438 = 56502
Step 130: 56502 + 438 = 56940
Step 131: 56940 + 438 = 57378
Step 132: 57378 + 438 = 57816
Step 133: 57816 + 438 = 58254
Step 134: 58254 + 438 = 58692
Step 135: 58692 + 438 = 59130
Step 136: 59130 + 438 = 59568
Step 137: 59568 + 438 = 60006
Step 138: 60006 + 438 = 60444
Step 139: 60444 + 438 = 60882
Step 140: 60882 + 438 = 61320
Step 141: 61320 + 438 = 61758
Step 142: 61758 + 438 = 62196
Step 143: 62196 + 438 = 62634
Step 144: 62634 + 438 = 63072
Step 145: 63072 + 438 = 63510
Step 146: 63510 + 438 = 63948
Step 147: 63948 + 438 = 64386
Step 148: 64386 + 438 = 64824
Step 149: 64824 + 438 = 65262
Step 150: 65262 + 438 = 65700
Step 151: 65700 + 438 = 66138
Step 152: 66138 + 438 = 66576
Step 153: 66576 + 438 = 67014
Step 154: 67014 + 438 = 67452
Step 155: 67452 + 438 = 67890
Step 156: 67890 + 438 = 68328
Step 157: 68328 + 438 = 68766
Step 158: 68766 + 438 = 69204
Step 159: 69204 + 438 = 69642
Step 160: 69642 + 438 = 70080
Step 161: 70080 + 438 = 70518
Step 162: 70518 + 438 = 70956
Step 163: 70956 + 438 = 71394
Step 164: 71394 + 438 = 71832
Step 165: 71832 + 438 = 72270
Step 166: 72270 + 438 = 72708
Step 167: 72708 + 438 = 73146
Step 168: 73146 + 438 = 73584
Step 169: 73584 + 438 = 74022
Step 170: 74022 + 438 = 74460
Step 171: 74460 + 438 = 74898
Step 172: 74898 + 438 = 75336
Step 173: 75336 + 438 = 75774
Step 174: 75774 + 438 = 76212
Step 175: 76212 + 438 = 76650
Step 176: 76650 + 438 = 77088
Step 177: 77088 + 438 = 77526
Step 178: 77526 + 438 = 77964
Step 179: 77964 + 438 = 78402
Step 180: 78402 + 438 = 78840
Step 181: 78840 + 438 = 79278
Step 182: 79278 + 438 = 79716
Step 183: 79716 + 438 = 80154
Step 184: 80154 + 438 = 80592
Step 185: 80592 + 438 = 81030
Step 186: 81030 + 438 = 81468
Step 187: 81468 + 438 = 81906
Step 188: 81906 + 438 = 82344
Step 189: 82344 + 438 = 82782
Step 190: 82782 + 438 = 83220
Step 191: 83220 + 438 = 83658
Step 192: 83658 + 438 = 84096
Step 193: 84096 + 438 = 84534
Step 194: 84534 + 438 = 84972
Step 195: 84972 + 438 = 85410
Step 196: 85410 + 438 = 85848
Step 197: 85848 + 438 = 86286
Step 198: 86286 + 438 = 86724
Step 199: 86724 + 438 = 87162
Step 200: 87162 + 438 = 87600
Step 201: 87600 + 438 = 88038
Step 202: 88038 + 438 = 88476
Step 203: 88476 + 438 = 88914
Step 204: 88914 + 438 = 89352
Step 205: 89352 + 438 = 89790
Step 206: 89790 + 438 = 90228
Step 207: 90228 + 438 = 90666
Step 208: 90666 + 438 = 91104
Step 209: 91104 + 438 = 91542
Step 210: 91542 + 438 = 91980
Step 211: 91980 + 438 = 92418
Step 212: 92418 + 438 = 92856
Step 213: 92856 + 438 = 93294
Step 214: 93294 + 438 = 93732
Step 215: 93732 + 438 = 94170
Step 216: 94170 + 438 = 94608
Step 217: 94608 + 438 = 95046
Step 218: 95046 + 438 = 95484
Step 219: 95484 + 438 = 95922
Step 220: 95922 + 438 = 96360
Step 221: 96360 + 438 = 96798
Step 222: 96798 + 438 = 97236
Step 223: 97236 + 438 = 97674
Step 224: 97674 + 438 = 98112
Step 225: 98112 + 438 = 98550
Step 226: 98550 + 438 = 98988
Step 227: 98988 + 438 = 99426
Step 228: 99426 + 438 = 99864
Step 229: 99864 + 438 = 100302
Step 230: 100302 + 438 = 100740
Step 231: 100740 + 438 = 101178
Step 232: 101178 + 438 = 101616
Step 233: 101616 + 438 = 102054
Step 234: 102054 + 438 = 102492
Step 235: 102492 + 438 = 102930
Step 236: 102930 + 438 = 103368
Step 237: 103368 + 438 = 103806
Step 238: 103806 + 438 = 104244
Step 239: 104244 + 438 = 104682
Step 240: 104682 + 438 = 105120
Step 241: 105120 + 438 = 105558
Step 242: 105558 + 438 = 105996
Step 243: 105996 + 438 = 106434
Step 244: 106434 + 438 = 106872
Step 245: 106872 + 438 = 107310
Step 246: 107310 + 438 = 107748
Step 247: 107748 + 438 = 108186
Step 248: 108186 + 438 = 108624
Step 249: 108624 + 438 = 109062
Step 250: 109062 + 438 = 109500
Step 251: 109500 + 438 = 109938
Step 252: 109938 + 438 = 110376
Step 253: 110376 + 438 = 110814
Step 254: 110814 + 438 = 111252
Step 255: 111252 + 438 = 111690
Step 256: 111690 + 438 = 112128
Step 257: 112128 + 438 = 112566
Step 258: 112566 + 438 = 113004
Step 259: 113004 + 438 = 113442
Step 260: 113442 + 438 = 113880
Step 261: 113880 + 438 = 114318
Step 262: 114318 + 438 = 114756
Step 263: 114756 + 438 = 115194
Step 264: 115194 + 438 = 115632
Step 265: 115632 + 438 = 116070
Step 266: 116070 + 438 = 116508
Step 267: 116508 + 438 = 116946
Step 268: 116946 + 438 = 117384
Step 269: 117384 + 438 = 117822
Step 270: 117822 + 438 = 118260
Step 271: 118260 + 438 = 118698
Step 272: 118698 + 438 = 119136
Step 273: 119136 + 438 = 119574
Step 274: 119574 + 438 = 120012
Step 275: 120012 + 438 = 120450
Step 276: 120450 + 438 = 120888
Step 277: 120888 + 438 = 121326
Step 278: 121326 + 438 = 121764
Step 279: 121764 + 438 = 122202
Step 280: 122202 + 438 = 122640
Step 281: 122640 + 438 = 123078
Step 282: 123078 + 438 = 123516
Step 283: 123516 + 438 = 123954
Step 284: 123954 + 438 = 124392
Step 285: 124392 + 438 = 124830
Step 286: 124830 + 438 = 125268
Step 287: 125268 + 438 = 125706
Step 288: 125706 + 438 = 126144
Step 289: 126144 + 438 = 126582
Step 290: 126582 + 438 = 127020
Step 291: 127020 + 438 = 127458
Step 292: 127458 + 438 = 127896
Step 293: 127896 + 438 = 128334
Step 294: 128334 + 438 = 128772
Step 295: 128772 + 438 = 129210
Step 296: 129210 + 438 = 129648
Step 297: 129648 + 438 = 130086
Step 298: 130086 + 438 = 130524
Step 299: 130524 + 438 = 130962
Step 300: 130962 + 438 = 131400
Step 301: 131400 + 438 = 131838
Step 302: 131838 + 438 = 132276
Step 303: 132276 + 438 = 132714
Step 304: 132714 + 438 = 133152
Step 305: 133152 + 438 = 133590
Step 306: 133590 + 438 = 134028
Step 307: 134028 + 438 = 134466
Step 308: 134466 + 438 = 134904
Step 309: 134904 + 438 = 135342
Step 310: 135342 + 438 = 135780
Step 311: 135780 + 438 = 136218
Step 312: 136218 + 438 = 136656
Step 313: 136656 + 438 = 137094
Step 314: 137094 + 438 = 137532
Step 315: 137532 + 438 = 137970
Step 316: 137970 + 438 = 138408
Step 317: 138408 + 438 = 138846
Step 318: 138846 + 438 = 139284
Step 319: 139284 + 438 = 139722
Step 320: 139722 + 438 = 140160
Step 321: 140160 + 438 = 140598
Step 322: 140598 + 438 = 141036
Step 323: 141036 + 438 = 141474
Step 324: 141474 + 438 = 141912
Step 325: 141912 + 438 = 142350
Step 326: 142350 + 438 = 142788
Step 327: 142788 + 438 = 143226
Step 328: 143226 + 438 = 143664
Step 329: 143664 + 438 = 144102
Step 330: 144102 + 438 = 144540
Step 331: 144540 + 438 = 144978
Step 332: 144978 + 438 = 145416
Step 333: 145416 + 438 = 145854
Step 334: 145854 + 438 = 146292
Step 335: 146292 + 438 = 146730
Step 336: 146730 + 438 = 147168
Step 337: 147168 + 438 = 147606
Step 338: 147606 + 438 = 148044
Step 339: 148044 + 438 = 148482
Step 340: 148482 + 438 = 148920
Step 341: 148920 + 438 = 149358
Step 342: 149358 + 438 = 149796
Step 343: 149796 + 438 = 150234
Step 344: 150234 + 438 = 150672
Step 345: 150672 + 438 = 151110
Step 346: 151110 + 438 = 151548
Step 347: 151548 + 438 = 151986
Step 348: 151986 + 438 = 152424
Step 349: 152424 + 438 = 152862
Step 350: 152862 + 438 = 153300
Step 351: 153300 + 438 = 153738
Step 352: 153738 + 438 = 154176
Step 353: 154176 + 438 = 154614
Step 354: 154614 + 438 = 155052
Step 355: 155052 + 438 = 155490
Step 356: 155490 + 438 = 155928
Step 357: 155928 + 438 = 156366
Step 358: 156366 + 438 = 156804
Step 359: 156804 + 438 = 157242
Step 360: 157242 + 438 = 157680
Step 361: 157680 + 438 = 158118
Step 362: 158118 + 438 = 158556
Step 363: 158556 + 438 = 158994
Step 364: 158994 + 438 = 159432
Step 365: 159432 + 438 = 159870
Step 366: 159870 + 438 = 160308
Step 367: 160308 + 438 = 160746
Step 368: 160746 + 438 = 161184
Step 369: 161184 + 438 = 161622
Step 370: 161622 + 438 = 162060
Step 371: 162060 + 438 = 162498
Step 372: 162498 + 438 = 162936
Step 373: 162936 + 438 = 163374
Step 374: 163374 + 438 = 163812
Step 375: 163812 + 438 = 164250
Step 376: 164250 + 438 = 164688
Step 377: 164688 + 438 = 165126
Step 378: 165126 + 438 = 165564
Step 379: 165564 + 438 = 166002
Step 380: 166002 + 438 = 166440
Step 381: 166440 + 438 = 166878
Step 382: 166878 + 438 = 167316
Step 383: 167316 + 438 = 167754
Step 384: 167754 + 438 = 168192
Step 385: 168192 + 438 = 168630
Step 386: 168630 + 438 = 169068
Step 387: 169068 + 438 = 169506
Step 388: 169506 + 438 = 169944
Step 389: 169944 + 438 = 170382
Step 390: 170382 + 438 = 170820
Step 391: 170820 + 438 = 171258
Step 392: 171258 + 438 = 171696
Step 393: 171696 + 438 = 172134
Step 394: 172134 + 438 = 172572
Step 395: 172572 + 438 = 173010
Step 396: 173010 + 438 = 173448
Step 397: 173448 + 438 = 173886
Step 398: 173886 + 438 = 174324
Step 399: 174324 + 438 = 174762
Step 400: 174762 + 438 = 175200
Step 401: 175200 + 438 = 175638
Step 402: 175638 + 438 = 176076
Step 403: 176076 + 438 = 176514
Step 404: 176514 + 438 = 176952
Step 405: 176952 + 438 = 177390
Step 406: 177390 + 438 = 177828
Step 407: 177828 + 438 = 178266
Step 408: 178266 + 438 = 178704
Step 409: 178704 + 438 = 179142
Step 410: 179142 + 438 = 179580
Step 411: 179580 + 438 = 180018
Step 412: 180018 + 438 = 180456
Step 413: 180456 + 438 = 180894
Step 414: 180894 + 438 = 181332
Step 415: 181332 + 438 = 181770
Step 416: 181770 + 438 = 182208
Step 417: 182208 + 438 = 182646
Step 418: 182646 + 438 = 183084
Step 419: 183084 + 438 = 183522
Step 420: 183522 + 438 = 183960
Step 421: 183960 + 438 = 184398
Step 422: 184398 + 438 = 184836
Step 423: 184836 + 438 = 185274
Step 424: 185274 + 438 = 185712
Step 425: 185712 + 438 = 186150
Step 426: 186150 + 438 = 186588
Step 427: 186588 + 438 = 187026
Step 428: 187026 + 438 = 187464
Step 429: 187464 + 438 = 187902
Step 430: 187902 + 438 = 188340
Step 431: 188340 + 438 = 188778
Step 432: 188778 + 438 = 189216
Step 433: 189216 + 438 = 189654
Step 434: 189654 + 438 = 190092
Step 435: 190092 + 438 = 190530
Step 436: 190530 + 438 = 190968
Step 437: 190968 + 438 = 191406
Step 438: 191406 + 438 = 191844
Step 439: 191844 + 438 = 192282
Step 440: 192282 + 438 = 192720
Step 441: 192720 + 438 = 193158
Step 442: 193158 + 438 = 193596
Step 443: 193596 + 438 = 194034
Step 444: 194034 + 438 = 194472
Step 445: 194472 + 438 = 194910
Step 446: 194910 + 438 = 195348
Step 447: 195348 + 438 = 195786
Step 448: 195786 + 438 = 196224
Step 449: 196224 + 438 = 196662
Step 450: 196662 + 438 = 197100
Step 451: 197100 + 438 = 197538
Step 452: 197538 + 438 = 197976
Step 453: 197976 + 438 = 198414
Step 454: 198414 + 438 = 198852
Step 455: 198852 + 438 = 199290
Step 456: 199290 + 438 = 199728
Step 457: 199728 + 438 = 200166
Step 458: 200166 + 438 = 200604
Step 459: 200604 + 438 = 201042
Step 460: 201042 + 438 = 201480
Step 461: 201480 + 438 = 201918
Step 462: 201918 + 438 = 202356
Step 463: 202356 + 438 = 202794
Step 464: 202794 + 438 = 203232
Step 465: 203232 + 438 = 203670
Step 466: 203670 + 438 = 204108
Step 467: 204108 + 438 = 204546
Step 468: 204546 + 438 = 204984
Step 469: 204984 + 438 = 205422
Step 470: 205422 + 438 = 205860
Step 471: 205860 + 438 = 206298
Step 472: 206298 + 438 = 206736
Step 473: 206736 + 438 = 207174
Step 474: 207174 + 438 = 207612
Step 475: 207612 + 438 = 208050
Step 476: 208050 + 438 = 208488
Step 477: 208488 + 438 = 208926
Step 478: 208926 + 438 = 209364
Step 479: 209364 + 438 = 209802
Step 480: 209802 + 438 = 210240
Step 481: 210240 + 438 = 210678
Step 482: 210678 + 438 = 211116
Step 483: 211116 + 438 = 211554
Step 484: 211554 + 438 = 211992
Step 485: 211992 + 438 = 212430
Step 486: 212430 + 438 = 212868
Step 487: 212868 + 438 = 213306
Step 488: 213306 + 438 = 213744
Step 489: 213744 + 438 = 214182
Step 490: 214182 + 438 = 214620

So, 438*490 = 214620