OK, let's work through this together. We're starting with 258 and we're going to multiply it by 288, which means we add 258 to itself 288 times.
Step 1: 0 + 258 = 258
Step 2: 258 + 258 = 516
Step 3: 516 + 258 = 774
Step 4: 774 + 258 = 1032
Step 5: 1032 + 258 = 1290
Step 6: 1290 + 258 = 1548
Step 7: 1548 + 258 = 1806
Step 8: 1806 + 258 = 2064
Step 9: 2064 + 258 = 2322
Step 10: 2322 + 258 = 2580
Step 11: 2580 + 258 = 2838
Step 12: 2838 + 258 = 3096
Step 13: 3096 + 258 = 3354
Step 14: 3354 + 258 = 3612
Step 15: 3612 + 258 = 3870
Step 16: 3870 + 258 = 4128
Step 17: 4128 + 258 = 4386
Step 18: 4386 + 258 = 4644
Step 19: 4644 + 258 = 4902
Step 20: 4902 + 258 = 5160
Step 21: 5160 + 258 = 5418
Step 22: 5418 + 258 = 5676
Step 23: 5676 + 258 = 5934
Step 24: 5934 + 258 = 6192
Step 25: 6192 + 258 = 6450
Step 26: 6450 + 258 = 6708
Step 27: 6708 + 258 = 6966
Step 28: 6966 + 258 = 7224
Step 29: 7224 + 258 = 7482
Step 30: 7482 + 258 = 7740
Step 31: 7740 + 258 = 7998
Step 32: 7998 + 258 = 8256
Step 33: 8256 + 258 = 8514
Step 34: 8514 + 258 = 8772
Step 35: 8772 + 258 = 9030
Step 36: 9030 + 258 = 9288
Step 37: 9288 + 258 = 9546
Step 38: 9546 + 258 = 9804
Step 39: 9804 + 258 = 10062
Step 40: 10062 + 258 = 10320
Step 41: 10320 + 258 = 10578
Step 42: 10578 + 258 = 10836
Step 43: 10836 + 258 = 11094
Step 44: 11094 + 258 = 11352
Step 45: 11352 + 258 = 11610
Step 46: 11610 + 258 = 11868
Step 47: 11868 + 258 = 12126
Step 48: 12126 + 258 = 12384
Step 49: 12384 + 258 = 12642
Step 50: 12642 + 258 = 12900
Step 51: 12900 + 258 = 13158
Step 52: 13158 + 258 = 13416
Step 53: 13416 + 258 = 13674
Step 54: 13674 + 258 = 13932
Step 55: 13932 + 258 = 14190
Step 56: 14190 + 258 = 14448
Step 57: 14448 + 258 = 14706
Step 58: 14706 + 258 = 14964
Step 59: 14964 + 258 = 15222
Step 60: 15222 + 258 = 15480
Step 61: 15480 + 258 = 15738
Step 62: 15738 + 258 = 15996
Step 63: 15996 + 258 = 16254
Step 64: 16254 + 258 = 16512
Step 65: 16512 + 258 = 16770
Step 66: 16770 + 258 = 17028
Step 67: 17028 + 258 = 17286
Step 68: 17286 + 258 = 17544
Step 69: 17544 + 258 = 17802
Step 70: 17802 + 258 = 18060
Step 71: 18060 + 258 = 18318
Step 72: 18318 + 258 = 18576
Step 73: 18576 + 258 = 18834
Step 74: 18834 + 258 = 19092
Step 75: 19092 + 258 = 19350
Step 76: 19350 + 258 = 19608
Step 77: 19608 + 258 = 19866
Step 78: 19866 + 258 = 20124
Step 79: 20124 + 258 = 20382
Step 80: 20382 + 258 = 20640
Step 81: 20640 + 258 = 20898
Step 82: 20898 + 258 = 21156
Step 83: 21156 + 258 = 21414
Step 84: 21414 + 258 = 21672
Step 85: 21672 + 258 = 21930
Step 86: 21930 + 258 = 22188
Step 87: 22188 + 258 = 22446
Step 88: 22446 + 258 = 22704
Step 89: 22704 + 258 = 22962
Step 90: 22962 + 258 = 23220
Step 91: 23220 + 258 = 23478
Step 92: 23478 + 258 = 23736
Step 93: 23736 + 258 = 23994
Step 94: 23994 + 258 = 24252
Step 95: 24252 + 258 = 24510
Step 96: 24510 + 258 = 24768
Step 97: 24768 + 258 = 25026
Step 98: 25026 + 258 = 25284
Step 99: 25284 + 258 = 25542
Step 100: 25542 + 258 = 25800
Step 101: 25800 + 258 = 26058
Step 102: 26058 + 258 = 26316
Step 103: 26316 + 258 = 26574
Step 104: 26574 + 258 = 26832
Step 105: 26832 + 258 = 27090
Step 106: 27090 + 258 = 27348
Step 107: 27348 + 258 = 27606
Step 108: 27606 + 258 = 27864
Step 109: 27864 + 258 = 28122
Step 110: 28122 + 258 = 28380
Step 111: 28380 + 258 = 28638
Step 112: 28638 + 258 = 28896
Step 113: 28896 + 258 = 29154
Step 114: 29154 + 258 = 29412
Step 115: 29412 + 258 = 29670
Step 116: 29670 + 258 = 29928
Step 117: 29928 + 258 = 30186
Step 118: 30186 + 258 = 30444
Step 119: 30444 + 258 = 30702
Step 120: 30702 + 258 = 30960
Step 121: 30960 + 258 = 31218
Step 122: 31218 + 258 = 31476
Step 123: 31476 + 258 = 31734
Step 124: 31734 + 258 = 31992
Step 125: 31992 + 258 = 32250
Step 126: 32250 + 258 = 32508
Step 127: 32508 + 258 = 32766
Step 128: 32766 + 258 = 33024
Step 129: 33024 + 258 = 33282
Step 130: 33282 + 258 = 33540
Step 131: 33540 + 258 = 33798
Step 132: 33798 + 258 = 34056
Step 133: 34056 + 258 = 34314
Step 134: 34314 + 258 = 34572
Step 135: 34572 + 258 = 34830
Step 136: 34830 + 258 = 35088
Step 137: 35088 + 258 = 35346
Step 138: 35346 + 258 = 35604
Step 139: 35604 + 258 = 35862
Step 140: 35862 + 258 = 36120
Step 141: 36120 + 258 = 36378
Step 142: 36378 + 258 = 36636
Step 143: 36636 + 258 = 36894
Step 144: 36894 + 258 = 37152
Step 145: 37152 + 258 = 37410
Step 146: 37410 + 258 = 37668
Step 147: 37668 + 258 = 37926
Step 148: 37926 + 258 = 38184
Step 149: 38184 + 258 = 38442
Step 150: 38442 + 258 = 38700
Step 151: 38700 + 258 = 38958
Step 152: 38958 + 258 = 39216
Step 153: 39216 + 258 = 39474
Step 154: 39474 + 258 = 39732
Step 155: 39732 + 258 = 39990
Step 156: 39990 + 258 = 40248
Step 157: 40248 + 258 = 40506
Step 158: 40506 + 258 = 40764
Step 159: 40764 + 258 = 41022
Step 160: 41022 + 258 = 41280
Step 161: 41280 + 258 = 41538
Step 162: 41538 + 258 = 41796
Step 163: 41796 + 258 = 42054
Step 164: 42054 + 258 = 42312
Step 165: 42312 + 258 = 42570
Step 166: 42570 + 258 = 42828
Step 167: 42828 + 258 = 43086
Step 168: 43086 + 258 = 43344
Step 169: 43344 + 258 = 43602
Step 170: 43602 + 258 = 43860
Step 171: 43860 + 258 = 44118
Step 172: 44118 + 258 = 44376
Step 173: 44376 + 258 = 44634
Step 174: 44634 + 258 = 44892
Step 175: 44892 + 258 = 45150
Step 176: 45150 + 258 = 45408
Step 177: 45408 + 258 = 45666
Step 178: 45666 + 258 = 45924
Step 179: 45924 + 258 = 46182
Step 180: 46182 + 258 = 46440
Step 181: 46440 + 258 = 46698
Step 182: 46698 + 258 = 46956
Step 183: 46956 + 258 = 47214
Step 184: 47214 + 258 = 47472
Step 185: 47472 + 258 = 47730
Step 186: 47730 + 258 = 47988
Step 187: 47988 + 258 = 48246
Step 188: 48246 + 258 = 48504
Step 189: 48504 + 258 = 48762
Step 190: 48762 + 258 = 49020
Step 191: 49020 + 258 = 49278
Step 192: 49278 + 258 = 49536
Step 193: 49536 + 258 = 49794
Step 194: 49794 + 258 = 50052
Step 195: 50052 + 258 = 50310
Step 196: 50310 + 258 = 50568
Step 197: 50568 + 258 = 50826
Step 198: 50826 + 258 = 51084
Step 199: 51084 + 258 = 51342
Step 200: 51342 + 258 = 51600
Step 201: 51600 + 258 = 51858
Step 202: 51858 + 258 = 52116
Step 203: 52116 + 258 = 52374
Step 204: 52374 + 258 = 52632
Step 205: 52632 + 258 = 52890
Step 206: 52890 + 258 = 53148
Step 207: 53148 + 258 = 53406
Step 208: 53406 + 258 = 53664
Step 209: 53664 + 258 = 53922
Step 210: 53922 + 258 = 54180
Step 211: 54180 + 258 = 54438
Step 212: 54438 + 258 = 54696
Step 213: 54696 + 258 = 54954
Step 214: 54954 + 258 = 55212
Step 215: 55212 + 258 = 55470
Step 216: 55470 + 258 = 55728
Step 217: 55728 + 258 = 55986
Step 218: 55986 + 258 = 56244
Step 219: 56244 + 258 = 56502
Step 220: 56502 + 258 = 56760
Step 221: 56760 + 258 = 57018
Step 222: 57018 + 258 = 57276
Step 223: 57276 + 258 = 57534
Step 224: 57534 + 258 = 57792
Step 225: 57792 + 258 = 58050
Step 226: 58050 + 258 = 58308
Step 227: 58308 + 258 = 58566
Step 228: 58566 + 258 = 58824
Step 229: 58824 + 258 = 59082
Step 230: 59082 + 258 = 59340
Step 231: 59340 + 258 = 59598
Step 232: 59598 + 258 = 59856
Step 233: 59856 + 258 = 60114
Step 234: 60114 + 258 = 60372
Step 235: 60372 + 258 = 60630
Step 236: 60630 + 258 = 60888
Step 237: 60888 + 258 = 61146
Step 238: 61146 + 258 = 61404
Step 239: 61404 + 258 = 61662
Step 240: 61662 + 258 = 61920
Step 241: 61920 + 258 = 62178
Step 242: 62178 + 258 = 62436
Step 243: 62436 + 258 = 62694
Step 244: 62694 + 258 = 62952
Step 245: 62952 + 258 = 63210
Step 246: 63210 + 258 = 63468
Step 247: 63468 + 258 = 63726
Step 248: 63726 + 258 = 63984
Step 249: 63984 + 258 = 64242
Step 250: 64242 + 258 = 64500
Step 251: 64500 + 258 = 64758
Step 252: 64758 + 258 = 65016
Step 253: 65016 + 258 = 65274
Step 254: 65274 + 258 = 65532
Step 255: 65532 + 258 = 65790
Step 256: 65790 + 258 = 66048
Step 257: 66048 + 258 = 66306
Step 258: 66306 + 258 = 66564
Step 259: 66564 + 258 = 66822
Step 260: 66822 + 258 = 67080
Step 261: 67080 + 258 = 67338
Step 262: 67338 + 258 = 67596
Step 263: 67596 + 258 = 67854
Step 264: 67854 + 258 = 68112
Step 265: 68112 + 258 = 68370
Step 266: 68370 + 258 = 68628
Step 267: 68628 + 258 = 68886
Step 268: 68886 + 258 = 69144
Step 269: 69144 + 258 = 69402
Step 270: 69402 + 258 = 69660
Step 271: 69660 + 258 = 69918
Step 272: 69918 + 258 = 70176
Step 273: 70176 + 258 = 70434
Step 274: 70434 + 258 = 70692
Step 275: 70692 + 258 = 70950
Step 276: 70950 + 258 = 71208
Step 277: 71208 + 258 = 71466
Step 278: 71466 + 258 = 71724
Step 279: 71724 + 258 = 71982
Step 280: 71982 + 258 = 72240
Step 281: 72240 + 258 = 72498
Step 282: 72498 + 258 = 72756
Step 283: 72756 + 258 = 73014
Step 284: 73014 + 258 = 73272
Step 285: 73272 + 258 = 73530
Step 286: 73530 + 258 = 73788
Step 287: 73788 + 258 = 74046
Step 288: 74046 + 258 = 74304

So, 258*288 = 74304