Alright, let's solve this math problem step by step. First, we have the number 259. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 154. So, we're going to take the number 259 and add it to itself 154 times.
Step 1: 0 + 259 = 259
Step 2: 259 + 259 = 518
Step 3: 518 + 259 = 777
Step 4: 777 + 259 = 1036
Step 5: 1036 + 259 = 1295
Step 6: 1295 + 259 = 1554
Step 7: 1554 + 259 = 1813
Step 8: 1813 + 259 = 2072
Step 9: 2072 + 259 = 2331
Step 10: 2331 + 259 = 2590
Step 11: 2590 + 259 = 2849
Step 12: 2849 + 259 = 3108
Step 13: 3108 + 259 = 3367
Step 14: 3367 + 259 = 3626
Step 15: 3626 + 259 = 3885
Step 16: 3885 + 259 = 4144
Step 17: 4144 + 259 = 4403
Step 18: 4403 + 259 = 4662
Step 19: 4662 + 259 = 4921
Step 20: 4921 + 259 = 5180
Step 21: 5180 + 259 = 5439
Step 22: 5439 + 259 = 5698
Step 23: 5698 + 259 = 5957
Step 24: 5957 + 259 = 6216
Step 25: 6216 + 259 = 6475
Step 26: 6475 + 259 = 6734
Step 27: 6734 + 259 = 6993
Step 28: 6993 + 259 = 7252
Step 29: 7252 + 259 = 7511
Step 30: 7511 + 259 = 7770
Step 31: 7770 + 259 = 8029
Step 32: 8029 + 259 = 8288
Step 33: 8288 + 259 = 8547
Step 34: 8547 + 259 = 8806
Step 35: 8806 + 259 = 9065
Step 36: 9065 + 259 = 9324
Step 37: 9324 + 259 = 9583
Step 38: 9583 + 259 = 9842
Step 39: 9842 + 259 = 10101
Step 40: 10101 + 259 = 10360
Step 41: 10360 + 259 = 10619
Step 42: 10619 + 259 = 10878
Step 43: 10878 + 259 = 11137
Step 44: 11137 + 259 = 11396
Step 45: 11396 + 259 = 11655
Step 46: 11655 + 259 = 11914
Step 47: 11914 + 259 = 12173
Step 48: 12173 + 259 = 12432
Step 49: 12432 + 259 = 12691
Step 50: 12691 + 259 = 12950
Step 51: 12950 + 259 = 13209
Step 52: 13209 + 259 = 13468
Step 53: 13468 + 259 = 13727
Step 54: 13727 + 259 = 13986
Step 55: 13986 + 259 = 14245
Step 56: 14245 + 259 = 14504
Step 57: 14504 + 259 = 14763
Step 58: 14763 + 259 = 15022
Step 59: 15022 + 259 = 15281
Step 60: 15281 + 259 = 15540
Step 61: 15540 + 259 = 15799
Step 62: 15799 + 259 = 16058
Step 63: 16058 + 259 = 16317
Step 64: 16317 + 259 = 16576
Step 65: 16576 + 259 = 16835
Step 66: 16835 + 259 = 17094
Step 67: 17094 + 259 = 17353
Step 68: 17353 + 259 = 17612
Step 69: 17612 + 259 = 17871
Step 70: 17871 + 259 = 18130
Step 71: 18130 + 259 = 18389
Step 72: 18389 + 259 = 18648
Step 73: 18648 + 259 = 18907
Step 74: 18907 + 259 = 19166
Step 75: 19166 + 259 = 19425
Step 76: 19425 + 259 = 19684
Step 77: 19684 + 259 = 19943
Step 78: 19943 + 259 = 20202
Step 79: 20202 + 259 = 20461
Step 80: 20461 + 259 = 20720
Step 81: 20720 + 259 = 20979
Step 82: 20979 + 259 = 21238
Step 83: 21238 + 259 = 21497
Step 84: 21497 + 259 = 21756
Step 85: 21756 + 259 = 22015
Step 86: 22015 + 259 = 22274
Step 87: 22274 + 259 = 22533
Step 88: 22533 + 259 = 22792
Step 89: 22792 + 259 = 23051
Step 90: 23051 + 259 = 23310
Step 91: 23310 + 259 = 23569
Step 92: 23569 + 259 = 23828
Step 93: 23828 + 259 = 24087
Step 94: 24087 + 259 = 24346
Step 95: 24346 + 259 = 24605
Step 96: 24605 + 259 = 24864
Step 97: 24864 + 259 = 25123
Step 98: 25123 + 259 = 25382
Step 99: 25382 + 259 = 25641
Step 100: 25641 + 259 = 25900
Step 101: 25900 + 259 = 26159
Step 102: 26159 + 259 = 26418
Step 103: 26418 + 259 = 26677
Step 104: 26677 + 259 = 26936
Step 105: 26936 + 259 = 27195
Step 106: 27195 + 259 = 27454
Step 107: 27454 + 259 = 27713
Step 108: 27713 + 259 = 27972
Step 109: 27972 + 259 = 28231
Step 110: 28231 + 259 = 28490
Step 111: 28490 + 259 = 28749
Step 112: 28749 + 259 = 29008
Step 113: 29008 + 259 = 29267
Step 114: 29267 + 259 = 29526
Step 115: 29526 + 259 = 29785
Step 116: 29785 + 259 = 30044
Step 117: 30044 + 259 = 30303
Step 118: 30303 + 259 = 30562
Step 119: 30562 + 259 = 30821
Step 120: 30821 + 259 = 31080
Step 121: 31080 + 259 = 31339
Step 122: 31339 + 259 = 31598
Step 123: 31598 + 259 = 31857
Step 124: 31857 + 259 = 32116
Step 125: 32116 + 259 = 32375
Step 126: 32375 + 259 = 32634
Step 127: 32634 + 259 = 32893
Step 128: 32893 + 259 = 33152
Step 129: 33152 + 259 = 33411
Step 130: 33411 + 259 = 33670
Step 131: 33670 + 259 = 33929
Step 132: 33929 + 259 = 34188
Step 133: 34188 + 259 = 34447
Step 134: 34447 + 259 = 34706
Step 135: 34706 + 259 = 34965
Step 136: 34965 + 259 = 35224
Step 137: 35224 + 259 = 35483
Step 138: 35483 + 259 = 35742
Step 139: 35742 + 259 = 36001
Step 140: 36001 + 259 = 36260
Step 141: 36260 + 259 = 36519
Step 142: 36519 + 259 = 36778
Step 143: 36778 + 259 = 37037
Step 144: 37037 + 259 = 37296
Step 145: 37296 + 259 = 37555
Step 146: 37555 + 259 = 37814
Step 147: 37814 + 259 = 38073
Step 148: 38073 + 259 = 38332
Step 149: 38332 + 259 = 38591
Step 150: 38591 + 259 = 38850
Step 151: 38850 + 259 = 39109
Step 152: 39109 + 259 = 39368
Step 153: 39368 + 259 = 39627
Step 154: 39627 + 259 = 39886

So, 259*154 = 39886