Alright, let's solve this math problem step by step. First, we have the number 109. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 423. So, we're going to take the number 109 and add it to itself 423 times.
Step 1: 0 + 109 = 109
Step 2: 109 + 109 = 218
Step 3: 218 + 109 = 327
Step 4: 327 + 109 = 436
Step 5: 436 + 109 = 545
Step 6: 545 + 109 = 654
Step 7: 654 + 109 = 763
Step 8: 763 + 109 = 872
Step 9: 872 + 109 = 981
Step 10: 981 + 109 = 1090
Step 11: 1090 + 109 = 1199
Step 12: 1199 + 109 = 1308
Step 13: 1308 + 109 = 1417
Step 14: 1417 + 109 = 1526
Step 15: 1526 + 109 = 1635
Step 16: 1635 + 109 = 1744
Step 17: 1744 + 109 = 1853
Step 18: 1853 + 109 = 1962
Step 19: 1962 + 109 = 2071
Step 20: 2071 + 109 = 2180
Step 21: 2180 + 109 = 2289
Step 22: 2289 + 109 = 2398
Step 23: 2398 + 109 = 2507
Step 24: 2507 + 109 = 2616
Step 25: 2616 + 109 = 2725
Step 26: 2725 + 109 = 2834
Step 27: 2834 + 109 = 2943
Step 28: 2943 + 109 = 3052
Step 29: 3052 + 109 = 3161
Step 30: 3161 + 109 = 3270
Step 31: 3270 + 109 = 3379
Step 32: 3379 + 109 = 3488
Step 33: 3488 + 109 = 3597
Step 34: 3597 + 109 = 3706
Step 35: 3706 + 109 = 3815
Step 36: 3815 + 109 = 3924
Step 37: 3924 + 109 = 4033
Step 38: 4033 + 109 = 4142
Step 39: 4142 + 109 = 4251
Step 40: 4251 + 109 = 4360
Step 41: 4360 + 109 = 4469
Step 42: 4469 + 109 = 4578
Step 43: 4578 + 109 = 4687
Step 44: 4687 + 109 = 4796
Step 45: 4796 + 109 = 4905
Step 46: 4905 + 109 = 5014
Step 47: 5014 + 109 = 5123
Step 48: 5123 + 109 = 5232
Step 49: 5232 + 109 = 5341
Step 50: 5341 + 109 = 5450
Step 51: 5450 + 109 = 5559
Step 52: 5559 + 109 = 5668
Step 53: 5668 + 109 = 5777
Step 54: 5777 + 109 = 5886
Step 55: 5886 + 109 = 5995
Step 56: 5995 + 109 = 6104
Step 57: 6104 + 109 = 6213
Step 58: 6213 + 109 = 6322
Step 59: 6322 + 109 = 6431
Step 60: 6431 + 109 = 6540
Step 61: 6540 + 109 = 6649
Step 62: 6649 + 109 = 6758
Step 63: 6758 + 109 = 6867
Step 64: 6867 + 109 = 6976
Step 65: 6976 + 109 = 7085
Step 66: 7085 + 109 = 7194
Step 67: 7194 + 109 = 7303
Step 68: 7303 + 109 = 7412
Step 69: 7412 + 109 = 7521
Step 70: 7521 + 109 = 7630
Step 71: 7630 + 109 = 7739
Step 72: 7739 + 109 = 7848
Step 73: 7848 + 109 = 7957
Step 74: 7957 + 109 = 8066
Step 75: 8066 + 109 = 8175
Step 76: 8175 + 109 = 8284
Step 77: 8284 + 109 = 8393
Step 78: 8393 + 109 = 8502
Step 79: 8502 + 109 = 8611
Step 80: 8611 + 109 = 8720
Step 81: 8720 + 109 = 8829
Step 82: 8829 + 109 = 8938
Step 83: 8938 + 109 = 9047
Step 84: 9047 + 109 = 9156
Step 85: 9156 + 109 = 9265
Step 86: 9265 + 109 = 9374
Step 87: 9374 + 109 = 9483
Step 88: 9483 + 109 = 9592
Step 89: 9592 + 109 = 9701
Step 90: 9701 + 109 = 9810
Step 91: 9810 + 109 = 9919
Step 92: 9919 + 109 = 10028
Step 93: 10028 + 109 = 10137
Step 94: 10137 + 109 = 10246
Step 95: 10246 + 109 = 10355
Step 96: 10355 + 109 = 10464
Step 97: 10464 + 109 = 10573
Step 98: 10573 + 109 = 10682
Step 99: 10682 + 109 = 10791
Step 100: 10791 + 109 = 10900
Step 101: 10900 + 109 = 11009
Step 102: 11009 + 109 = 11118
Step 103: 11118 + 109 = 11227
Step 104: 11227 + 109 = 11336
Step 105: 11336 + 109 = 11445
Step 106: 11445 + 109 = 11554
Step 107: 11554 + 109 = 11663
Step 108: 11663 + 109 = 11772
Step 109: 11772 + 109 = 11881
Step 110: 11881 + 109 = 11990
Step 111: 11990 + 109 = 12099
Step 112: 12099 + 109 = 12208
Step 113: 12208 + 109 = 12317
Step 114: 12317 + 109 = 12426
Step 115: 12426 + 109 = 12535
Step 116: 12535 + 109 = 12644
Step 117: 12644 + 109 = 12753
Step 118: 12753 + 109 = 12862
Step 119: 12862 + 109 = 12971
Step 120: 12971 + 109 = 13080
Step 121: 13080 + 109 = 13189
Step 122: 13189 + 109 = 13298
Step 123: 13298 + 109 = 13407
Step 124: 13407 + 109 = 13516
Step 125: 13516 + 109 = 13625
Step 126: 13625 + 109 = 13734
Step 127: 13734 + 109 = 13843
Step 128: 13843 + 109 = 13952
Step 129: 13952 + 109 = 14061
Step 130: 14061 + 109 = 14170
Step 131: 14170 + 109 = 14279
Step 132: 14279 + 109 = 14388
Step 133: 14388 + 109 = 14497
Step 134: 14497 + 109 = 14606
Step 135: 14606 + 109 = 14715
Step 136: 14715 + 109 = 14824
Step 137: 14824 + 109 = 14933
Step 138: 14933 + 109 = 15042
Step 139: 15042 + 109 = 15151
Step 140: 15151 + 109 = 15260
Step 141: 15260 + 109 = 15369
Step 142: 15369 + 109 = 15478
Step 143: 15478 + 109 = 15587
Step 144: 15587 + 109 = 15696
Step 145: 15696 + 109 = 15805
Step 146: 15805 + 109 = 15914
Step 147: 15914 + 109 = 16023
Step 148: 16023 + 109 = 16132
Step 149: 16132 + 109 = 16241
Step 150: 16241 + 109 = 16350
Step 151: 16350 + 109 = 16459
Step 152: 16459 + 109 = 16568
Step 153: 16568 + 109 = 16677
Step 154: 16677 + 109 = 16786
Step 155: 16786 + 109 = 16895
Step 156: 16895 + 109 = 17004
Step 157: 17004 + 109 = 17113
Step 158: 17113 + 109 = 17222
Step 159: 17222 + 109 = 17331
Step 160: 17331 + 109 = 17440
Step 161: 17440 + 109 = 17549
Step 162: 17549 + 109 = 17658
Step 163: 17658 + 109 = 17767
Step 164: 17767 + 109 = 17876
Step 165: 17876 + 109 = 17985
Step 166: 17985 + 109 = 18094
Step 167: 18094 + 109 = 18203
Step 168: 18203 + 109 = 18312
Step 169: 18312 + 109 = 18421
Step 170: 18421 + 109 = 18530
Step 171: 18530 + 109 = 18639
Step 172: 18639 + 109 = 18748
Step 173: 18748 + 109 = 18857
Step 174: 18857 + 109 = 18966
Step 175: 18966 + 109 = 19075
Step 176: 19075 + 109 = 19184
Step 177: 19184 + 109 = 19293
Step 178: 19293 + 109 = 19402
Step 179: 19402 + 109 = 19511
Step 180: 19511 + 109 = 19620
Step 181: 19620 + 109 = 19729
Step 182: 19729 + 109 = 19838
Step 183: 19838 + 109 = 19947
Step 184: 19947 + 109 = 20056
Step 185: 20056 + 109 = 20165
Step 186: 20165 + 109 = 20274
Step 187: 20274 + 109 = 20383
Step 188: 20383 + 109 = 20492
Step 189: 20492 + 109 = 20601
Step 190: 20601 + 109 = 20710
Step 191: 20710 + 109 = 20819
Step 192: 20819 + 109 = 20928
Step 193: 20928 + 109 = 21037
Step 194: 21037 + 109 = 21146
Step 195: 21146 + 109 = 21255
Step 196: 21255 + 109 = 21364
Step 197: 21364 + 109 = 21473
Step 198: 21473 + 109 = 21582
Step 199: 21582 + 109 = 21691
Step 200: 21691 + 109 = 21800
Step 201: 21800 + 109 = 21909
Step 202: 21909 + 109 = 22018
Step 203: 22018 + 109 = 22127
Step 204: 22127 + 109 = 22236
Step 205: 22236 + 109 = 22345
Step 206: 22345 + 109 = 22454
Step 207: 22454 + 109 = 22563
Step 208: 22563 + 109 = 22672
Step 209: 22672 + 109 = 22781
Step 210: 22781 + 109 = 22890
Step 211: 22890 + 109 = 22999
Step 212: 22999 + 109 = 23108
Step 213: 23108 + 109 = 23217
Step 214: 23217 + 109 = 23326
Step 215: 23326 + 109 = 23435
Step 216: 23435 + 109 = 23544
Step 217: 23544 + 109 = 23653
Step 218: 23653 + 109 = 23762
Step 219: 23762 + 109 = 23871
Step 220: 23871 + 109 = 23980
Step 221: 23980 + 109 = 24089
Step 222: 24089 + 109 = 24198
Step 223: 24198 + 109 = 24307
Step 224: 24307 + 109 = 24416
Step 225: 24416 + 109 = 24525
Step 226: 24525 + 109 = 24634
Step 227: 24634 + 109 = 24743
Step 228: 24743 + 109 = 24852
Step 229: 24852 + 109 = 24961
Step 230: 24961 + 109 = 25070
Step 231: 25070 + 109 = 25179
Step 232: 25179 + 109 = 25288
Step 233: 25288 + 109 = 25397
Step 234: 25397 + 109 = 25506
Step 235: 25506 + 109 = 25615
Step 236: 25615 + 109 = 25724
Step 237: 25724 + 109 = 25833
Step 238: 25833 + 109 = 25942
Step 239: 25942 + 109 = 26051
Step 240: 26051 + 109 = 26160
Step 241: 26160 + 109 = 26269
Step 242: 26269 + 109 = 26378
Step 243: 26378 + 109 = 26487
Step 244: 26487 + 109 = 26596
Step 245: 26596 + 109 = 26705
Step 246: 26705 + 109 = 26814
Step 247: 26814 + 109 = 26923
Step 248: 26923 + 109 = 27032
Step 249: 27032 + 109 = 27141
Step 250: 27141 + 109 = 27250
Step 251: 27250 + 109 = 27359
Step 252: 27359 + 109 = 27468
Step 253: 27468 + 109 = 27577
Step 254: 27577 + 109 = 27686
Step 255: 27686 + 109 = 27795
Step 256: 27795 + 109 = 27904
Step 257: 27904 + 109 = 28013
Step 258: 28013 + 109 = 28122
Step 259: 28122 + 109 = 28231
Step 260: 28231 + 109 = 28340
Step 261: 28340 + 109 = 28449
Step 262: 28449 + 109 = 28558
Step 263: 28558 + 109 = 28667
Step 264: 28667 + 109 = 28776
Step 265: 28776 + 109 = 28885
Step 266: 28885 + 109 = 28994
Step 267: 28994 + 109 = 29103
Step 268: 29103 + 109 = 29212
Step 269: 29212 + 109 = 29321
Step 270: 29321 + 109 = 29430
Step 271: 29430 + 109 = 29539
Step 272: 29539 + 109 = 29648
Step 273: 29648 + 109 = 29757
Step 274: 29757 + 109 = 29866
Step 275: 29866 + 109 = 29975
Step 276: 29975 + 109 = 30084
Step 277: 30084 + 109 = 30193
Step 278: 30193 + 109 = 30302
Step 279: 30302 + 109 = 30411
Step 280: 30411 + 109 = 30520
Step 281: 30520 + 109 = 30629
Step 282: 30629 + 109 = 30738
Step 283: 30738 + 109 = 30847
Step 284: 30847 + 109 = 30956
Step 285: 30956 + 109 = 31065
Step 286: 31065 + 109 = 31174
Step 287: 31174 + 109 = 31283
Step 288: 31283 + 109 = 31392
Step 289: 31392 + 109 = 31501
Step 290: 31501 + 109 = 31610
Step 291: 31610 + 109 = 31719
Step 292: 31719 + 109 = 31828
Step 293: 31828 + 109 = 31937
Step 294: 31937 + 109 = 32046
Step 295: 32046 + 109 = 32155
Step 296: 32155 + 109 = 32264
Step 297: 32264 + 109 = 32373
Step 298: 32373 + 109 = 32482
Step 299: 32482 + 109 = 32591
Step 300: 32591 + 109 = 32700
Step 301: 32700 + 109 = 32809
Step 302: 32809 + 109 = 32918
Step 303: 32918 + 109 = 33027
Step 304: 33027 + 109 = 33136
Step 305: 33136 + 109 = 33245
Step 306: 33245 + 109 = 33354
Step 307: 33354 + 109 = 33463
Step 308: 33463 + 109 = 33572
Step 309: 33572 + 109 = 33681
Step 310: 33681 + 109 = 33790
Step 311: 33790 + 109 = 33899
Step 312: 33899 + 109 = 34008
Step 313: 34008 + 109 = 34117
Step 314: 34117 + 109 = 34226
Step 315: 34226 + 109 = 34335
Step 316: 34335 + 109 = 34444
Step 317: 34444 + 109 = 34553
Step 318: 34553 + 109 = 34662
Step 319: 34662 + 109 = 34771
Step 320: 34771 + 109 = 34880
Step 321: 34880 + 109 = 34989
Step 322: 34989 + 109 = 35098
Step 323: 35098 + 109 = 35207
Step 324: 35207 + 109 = 35316
Step 325: 35316 + 109 = 35425
Step 326: 35425 + 109 = 35534
Step 327: 35534 + 109 = 35643
Step 328: 35643 + 109 = 35752
Step 329: 35752 + 109 = 35861
Step 330: 35861 + 109 = 35970
Step 331: 35970 + 109 = 36079
Step 332: 36079 + 109 = 36188
Step 333: 36188 + 109 = 36297
Step 334: 36297 + 109 = 36406
Step 335: 36406 + 109 = 36515
Step 336: 36515 + 109 = 36624
Step 337: 36624 + 109 = 36733
Step 338: 36733 + 109 = 36842
Step 339: 36842 + 109 = 36951
Step 340: 36951 + 109 = 37060
Step 341: 37060 + 109 = 37169
Step 342: 37169 + 109 = 37278
Step 343: 37278 + 109 = 37387
Step 344: 37387 + 109 = 37496
Step 345: 37496 + 109 = 37605
Step 346: 37605 + 109 = 37714
Step 347: 37714 + 109 = 37823
Step 348: 37823 + 109 = 37932
Step 349: 37932 + 109 = 38041
Step 350: 38041 + 109 = 38150
Step 351: 38150 + 109 = 38259
Step 352: 38259 + 109 = 38368
Step 353: 38368 + 109 = 38477
Step 354: 38477 + 109 = 38586
Step 355: 38586 + 109 = 38695
Step 356: 38695 + 109 = 38804
Step 357: 38804 + 109 = 38913
Step 358: 38913 + 109 = 39022
Step 359: 39022 + 109 = 39131
Step 360: 39131 + 109 = 39240
Step 361: 39240 + 109 = 39349
Step 362: 39349 + 109 = 39458
Step 363: 39458 + 109 = 39567
Step 364: 39567 + 109 = 39676
Step 365: 39676 + 109 = 39785
Step 366: 39785 + 109 = 39894
Step 367: 39894 + 109 = 40003
Step 368: 40003 + 109 = 40112
Step 369: 40112 + 109 = 40221
Step 370: 40221 + 109 = 40330
Step 371: 40330 + 109 = 40439
Step 372: 40439 + 109 = 40548
Step 373: 40548 + 109 = 40657
Step 374: 40657 + 109 = 40766
Step 375: 40766 + 109 = 40875
Step 376: 40875 + 109 = 40984
Step 377: 40984 + 109 = 41093
Step 378: 41093 + 109 = 41202
Step 379: 41202 + 109 = 41311
Step 380: 41311 + 109 = 41420
Step 381: 41420 + 109 = 41529
Step 382: 41529 + 109 = 41638
Step 383: 41638 + 109 = 41747
Step 384: 41747 + 109 = 41856
Step 385: 41856 + 109 = 41965
Step 386: 41965 + 109 = 42074
Step 387: 42074 + 109 = 42183
Step 388: 42183 + 109 = 42292
Step 389: 42292 + 109 = 42401
Step 390: 42401 + 109 = 42510
Step 391: 42510 + 109 = 42619
Step 392: 42619 + 109 = 42728
Step 393: 42728 + 109 = 42837
Step 394: 42837 + 109 = 42946
Step 395: 42946 + 109 = 43055
Step 396: 43055 + 109 = 43164
Step 397: 43164 + 109 = 43273
Step 398: 43273 + 109 = 43382
Step 399: 43382 + 109 = 43491
Step 400: 43491 + 109 = 43600
Step 401: 43600 + 109 = 43709
Step 402: 43709 + 109 = 43818
Step 403: 43818 + 109 = 43927
Step 404: 43927 + 109 = 44036
Step 405: 44036 + 109 = 44145
Step 406: 44145 + 109 = 44254
Step 407: 44254 + 109 = 44363
Step 408: 44363 + 109 = 44472
Step 409: 44472 + 109 = 44581
Step 410: 44581 + 109 = 44690
Step 411: 44690 + 109 = 44799
Step 412: 44799 + 109 = 44908
Step 413: 44908 + 109 = 45017
Step 414: 45017 + 109 = 45126
Step 415: 45126 + 109 = 45235
Step 416: 45235 + 109 = 45344
Step 417: 45344 + 109 = 45453
Step 418: 45453 + 109 = 45562
Step 419: 45562 + 109 = 45671
Step 420: 45671 + 109 = 45780
Step 421: 45780 + 109 = 45889
Step 422: 45889 + 109 = 45998
Step 423: 45998 + 109 = 46107

So, 109*423 = 46107