Alright, let's solve this math problem step by step. First, we have the number 429. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 259. So, we're going to take the number 429 and add it to itself 259 times.
Step 1: 0 + 429 = 429
Step 2: 429 + 429 = 858
Step 3: 858 + 429 = 1287
Step 4: 1287 + 429 = 1716
Step 5: 1716 + 429 = 2145
Step 6: 2145 + 429 = 2574
Step 7: 2574 + 429 = 3003
Step 8: 3003 + 429 = 3432
Step 9: 3432 + 429 = 3861
Step 10: 3861 + 429 = 4290
Step 11: 4290 + 429 = 4719
Step 12: 4719 + 429 = 5148
Step 13: 5148 + 429 = 5577
Step 14: 5577 + 429 = 6006
Step 15: 6006 + 429 = 6435
Step 16: 6435 + 429 = 6864
Step 17: 6864 + 429 = 7293
Step 18: 7293 + 429 = 7722
Step 19: 7722 + 429 = 8151
Step 20: 8151 + 429 = 8580
Step 21: 8580 + 429 = 9009
Step 22: 9009 + 429 = 9438
Step 23: 9438 + 429 = 9867
Step 24: 9867 + 429 = 10296
Step 25: 10296 + 429 = 10725
Step 26: 10725 + 429 = 11154
Step 27: 11154 + 429 = 11583
Step 28: 11583 + 429 = 12012
Step 29: 12012 + 429 = 12441
Step 30: 12441 + 429 = 12870
Step 31: 12870 + 429 = 13299
Step 32: 13299 + 429 = 13728
Step 33: 13728 + 429 = 14157
Step 34: 14157 + 429 = 14586
Step 35: 14586 + 429 = 15015
Step 36: 15015 + 429 = 15444
Step 37: 15444 + 429 = 15873
Step 38: 15873 + 429 = 16302
Step 39: 16302 + 429 = 16731
Step 40: 16731 + 429 = 17160
Step 41: 17160 + 429 = 17589
Step 42: 17589 + 429 = 18018
Step 43: 18018 + 429 = 18447
Step 44: 18447 + 429 = 18876
Step 45: 18876 + 429 = 19305
Step 46: 19305 + 429 = 19734
Step 47: 19734 + 429 = 20163
Step 48: 20163 + 429 = 20592
Step 49: 20592 + 429 = 21021
Step 50: 21021 + 429 = 21450
Step 51: 21450 + 429 = 21879
Step 52: 21879 + 429 = 22308
Step 53: 22308 + 429 = 22737
Step 54: 22737 + 429 = 23166
Step 55: 23166 + 429 = 23595
Step 56: 23595 + 429 = 24024
Step 57: 24024 + 429 = 24453
Step 58: 24453 + 429 = 24882
Step 59: 24882 + 429 = 25311
Step 60: 25311 + 429 = 25740
Step 61: 25740 + 429 = 26169
Step 62: 26169 + 429 = 26598
Step 63: 26598 + 429 = 27027
Step 64: 27027 + 429 = 27456
Step 65: 27456 + 429 = 27885
Step 66: 27885 + 429 = 28314
Step 67: 28314 + 429 = 28743
Step 68: 28743 + 429 = 29172
Step 69: 29172 + 429 = 29601
Step 70: 29601 + 429 = 30030
Step 71: 30030 + 429 = 30459
Step 72: 30459 + 429 = 30888
Step 73: 30888 + 429 = 31317
Step 74: 31317 + 429 = 31746
Step 75: 31746 + 429 = 32175
Step 76: 32175 + 429 = 32604
Step 77: 32604 + 429 = 33033
Step 78: 33033 + 429 = 33462
Step 79: 33462 + 429 = 33891
Step 80: 33891 + 429 = 34320
Step 81: 34320 + 429 = 34749
Step 82: 34749 + 429 = 35178
Step 83: 35178 + 429 = 35607
Step 84: 35607 + 429 = 36036
Step 85: 36036 + 429 = 36465
Step 86: 36465 + 429 = 36894
Step 87: 36894 + 429 = 37323
Step 88: 37323 + 429 = 37752
Step 89: 37752 + 429 = 38181
Step 90: 38181 + 429 = 38610
Step 91: 38610 + 429 = 39039
Step 92: 39039 + 429 = 39468
Step 93: 39468 + 429 = 39897
Step 94: 39897 + 429 = 40326
Step 95: 40326 + 429 = 40755
Step 96: 40755 + 429 = 41184
Step 97: 41184 + 429 = 41613
Step 98: 41613 + 429 = 42042
Step 99: 42042 + 429 = 42471
Step 100: 42471 + 429 = 42900
Step 101: 42900 + 429 = 43329
Step 102: 43329 + 429 = 43758
Step 103: 43758 + 429 = 44187
Step 104: 44187 + 429 = 44616
Step 105: 44616 + 429 = 45045
Step 106: 45045 + 429 = 45474
Step 107: 45474 + 429 = 45903
Step 108: 45903 + 429 = 46332
Step 109: 46332 + 429 = 46761
Step 110: 46761 + 429 = 47190
Step 111: 47190 + 429 = 47619
Step 112: 47619 + 429 = 48048
Step 113: 48048 + 429 = 48477
Step 114: 48477 + 429 = 48906
Step 115: 48906 + 429 = 49335
Step 116: 49335 + 429 = 49764
Step 117: 49764 + 429 = 50193
Step 118: 50193 + 429 = 50622
Step 119: 50622 + 429 = 51051
Step 120: 51051 + 429 = 51480
Step 121: 51480 + 429 = 51909
Step 122: 51909 + 429 = 52338
Step 123: 52338 + 429 = 52767
Step 124: 52767 + 429 = 53196
Step 125: 53196 + 429 = 53625
Step 126: 53625 + 429 = 54054
Step 127: 54054 + 429 = 54483
Step 128: 54483 + 429 = 54912
Step 129: 54912 + 429 = 55341
Step 130: 55341 + 429 = 55770
Step 131: 55770 + 429 = 56199
Step 132: 56199 + 429 = 56628
Step 133: 56628 + 429 = 57057
Step 134: 57057 + 429 = 57486
Step 135: 57486 + 429 = 57915
Step 136: 57915 + 429 = 58344
Step 137: 58344 + 429 = 58773
Step 138: 58773 + 429 = 59202
Step 139: 59202 + 429 = 59631
Step 140: 59631 + 429 = 60060
Step 141: 60060 + 429 = 60489
Step 142: 60489 + 429 = 60918
Step 143: 60918 + 429 = 61347
Step 144: 61347 + 429 = 61776
Step 145: 61776 + 429 = 62205
Step 146: 62205 + 429 = 62634
Step 147: 62634 + 429 = 63063
Step 148: 63063 + 429 = 63492
Step 149: 63492 + 429 = 63921
Step 150: 63921 + 429 = 64350
Step 151: 64350 + 429 = 64779
Step 152: 64779 + 429 = 65208
Step 153: 65208 + 429 = 65637
Step 154: 65637 + 429 = 66066
Step 155: 66066 + 429 = 66495
Step 156: 66495 + 429 = 66924
Step 157: 66924 + 429 = 67353
Step 158: 67353 + 429 = 67782
Step 159: 67782 + 429 = 68211
Step 160: 68211 + 429 = 68640
Step 161: 68640 + 429 = 69069
Step 162: 69069 + 429 = 69498
Step 163: 69498 + 429 = 69927
Step 164: 69927 + 429 = 70356
Step 165: 70356 + 429 = 70785
Step 166: 70785 + 429 = 71214
Step 167: 71214 + 429 = 71643
Step 168: 71643 + 429 = 72072
Step 169: 72072 + 429 = 72501
Step 170: 72501 + 429 = 72930
Step 171: 72930 + 429 = 73359
Step 172: 73359 + 429 = 73788
Step 173: 73788 + 429 = 74217
Step 174: 74217 + 429 = 74646
Step 175: 74646 + 429 = 75075
Step 176: 75075 + 429 = 75504
Step 177: 75504 + 429 = 75933
Step 178: 75933 + 429 = 76362
Step 179: 76362 + 429 = 76791
Step 180: 76791 + 429 = 77220
Step 181: 77220 + 429 = 77649
Step 182: 77649 + 429 = 78078
Step 183: 78078 + 429 = 78507
Step 184: 78507 + 429 = 78936
Step 185: 78936 + 429 = 79365
Step 186: 79365 + 429 = 79794
Step 187: 79794 + 429 = 80223
Step 188: 80223 + 429 = 80652
Step 189: 80652 + 429 = 81081
Step 190: 81081 + 429 = 81510
Step 191: 81510 + 429 = 81939
Step 192: 81939 + 429 = 82368
Step 193: 82368 + 429 = 82797
Step 194: 82797 + 429 = 83226
Step 195: 83226 + 429 = 83655
Step 196: 83655 + 429 = 84084
Step 197: 84084 + 429 = 84513
Step 198: 84513 + 429 = 84942
Step 199: 84942 + 429 = 85371
Step 200: 85371 + 429 = 85800
Step 201: 85800 + 429 = 86229
Step 202: 86229 + 429 = 86658
Step 203: 86658 + 429 = 87087
Step 204: 87087 + 429 = 87516
Step 205: 87516 + 429 = 87945
Step 206: 87945 + 429 = 88374
Step 207: 88374 + 429 = 88803
Step 208: 88803 + 429 = 89232
Step 209: 89232 + 429 = 89661
Step 210: 89661 + 429 = 90090
Step 211: 90090 + 429 = 90519
Step 212: 90519 + 429 = 90948
Step 213: 90948 + 429 = 91377
Step 214: 91377 + 429 = 91806
Step 215: 91806 + 429 = 92235
Step 216: 92235 + 429 = 92664
Step 217: 92664 + 429 = 93093
Step 218: 93093 + 429 = 93522
Step 219: 93522 + 429 = 93951
Step 220: 93951 + 429 = 94380
Step 221: 94380 + 429 = 94809
Step 222: 94809 + 429 = 95238
Step 223: 95238 + 429 = 95667
Step 224: 95667 + 429 = 96096
Step 225: 96096 + 429 = 96525
Step 226: 96525 + 429 = 96954
Step 227: 96954 + 429 = 97383
Step 228: 97383 + 429 = 97812
Step 229: 97812 + 429 = 98241
Step 230: 98241 + 429 = 98670
Step 231: 98670 + 429 = 99099
Step 232: 99099 + 429 = 99528
Step 233: 99528 + 429 = 99957
Step 234: 99957 + 429 = 100386
Step 235: 100386 + 429 = 100815
Step 236: 100815 + 429 = 101244
Step 237: 101244 + 429 = 101673
Step 238: 101673 + 429 = 102102
Step 239: 102102 + 429 = 102531
Step 240: 102531 + 429 = 102960
Step 241: 102960 + 429 = 103389
Step 242: 103389 + 429 = 103818
Step 243: 103818 + 429 = 104247
Step 244: 104247 + 429 = 104676
Step 245: 104676 + 429 = 105105
Step 246: 105105 + 429 = 105534
Step 247: 105534 + 429 = 105963
Step 248: 105963 + 429 = 106392
Step 249: 106392 + 429 = 106821
Step 250: 106821 + 429 = 107250
Step 251: 107250 + 429 = 107679
Step 252: 107679 + 429 = 108108
Step 253: 108108 + 429 = 108537
Step 254: 108537 + 429 = 108966
Step 255: 108966 + 429 = 109395
Step 256: 109395 + 429 = 109824
Step 257: 109824 + 429 = 110253
Step 258: 110253 + 429 = 110682
Step 259: 110682 + 429 = 111111

So, 429*259 = 111111