Alright, let's solve this math problem step by step. First, we have the number 731. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 257. So, we're going to take the number 731 and add it to itself 257 times.
Step 1: 0 + 731 = 731
Step 2: 731 + 731 = 1462
Step 3: 1462 + 731 = 2193
Step 4: 2193 + 731 = 2924
Step 5: 2924 + 731 = 3655
Step 6: 3655 + 731 = 4386
Step 7: 4386 + 731 = 5117
Step 8: 5117 + 731 = 5848
Step 9: 5848 + 731 = 6579
Step 10: 6579 + 731 = 7310
Step 11: 7310 + 731 = 8041
Step 12: 8041 + 731 = 8772
Step 13: 8772 + 731 = 9503
Step 14: 9503 + 731 = 10234
Step 15: 10234 + 731 = 10965
Step 16: 10965 + 731 = 11696
Step 17: 11696 + 731 = 12427
Step 18: 12427 + 731 = 13158
Step 19: 13158 + 731 = 13889
Step 20: 13889 + 731 = 14620
Step 21: 14620 + 731 = 15351
Step 22: 15351 + 731 = 16082
Step 23: 16082 + 731 = 16813
Step 24: 16813 + 731 = 17544
Step 25: 17544 + 731 = 18275
Step 26: 18275 + 731 = 19006
Step 27: 19006 + 731 = 19737
Step 28: 19737 + 731 = 20468
Step 29: 20468 + 731 = 21199
Step 30: 21199 + 731 = 21930
Step 31: 21930 + 731 = 22661
Step 32: 22661 + 731 = 23392
Step 33: 23392 + 731 = 24123
Step 34: 24123 + 731 = 24854
Step 35: 24854 + 731 = 25585
Step 36: 25585 + 731 = 26316
Step 37: 26316 + 731 = 27047
Step 38: 27047 + 731 = 27778
Step 39: 27778 + 731 = 28509
Step 40: 28509 + 731 = 29240
Step 41: 29240 + 731 = 29971
Step 42: 29971 + 731 = 30702
Step 43: 30702 + 731 = 31433
Step 44: 31433 + 731 = 32164
Step 45: 32164 + 731 = 32895
Step 46: 32895 + 731 = 33626
Step 47: 33626 + 731 = 34357
Step 48: 34357 + 731 = 35088
Step 49: 35088 + 731 = 35819
Step 50: 35819 + 731 = 36550
Step 51: 36550 + 731 = 37281
Step 52: 37281 + 731 = 38012
Step 53: 38012 + 731 = 38743
Step 54: 38743 + 731 = 39474
Step 55: 39474 + 731 = 40205
Step 56: 40205 + 731 = 40936
Step 57: 40936 + 731 = 41667
Step 58: 41667 + 731 = 42398
Step 59: 42398 + 731 = 43129
Step 60: 43129 + 731 = 43860
Step 61: 43860 + 731 = 44591
Step 62: 44591 + 731 = 45322
Step 63: 45322 + 731 = 46053
Step 64: 46053 + 731 = 46784
Step 65: 46784 + 731 = 47515
Step 66: 47515 + 731 = 48246
Step 67: 48246 + 731 = 48977
Step 68: 48977 + 731 = 49708
Step 69: 49708 + 731 = 50439
Step 70: 50439 + 731 = 51170
Step 71: 51170 + 731 = 51901
Step 72: 51901 + 731 = 52632
Step 73: 52632 + 731 = 53363
Step 74: 53363 + 731 = 54094
Step 75: 54094 + 731 = 54825
Step 76: 54825 + 731 = 55556
Step 77: 55556 + 731 = 56287
Step 78: 56287 + 731 = 57018
Step 79: 57018 + 731 = 57749
Step 80: 57749 + 731 = 58480
Step 81: 58480 + 731 = 59211
Step 82: 59211 + 731 = 59942
Step 83: 59942 + 731 = 60673
Step 84: 60673 + 731 = 61404
Step 85: 61404 + 731 = 62135
Step 86: 62135 + 731 = 62866
Step 87: 62866 + 731 = 63597
Step 88: 63597 + 731 = 64328
Step 89: 64328 + 731 = 65059
Step 90: 65059 + 731 = 65790
Step 91: 65790 + 731 = 66521
Step 92: 66521 + 731 = 67252
Step 93: 67252 + 731 = 67983
Step 94: 67983 + 731 = 68714
Step 95: 68714 + 731 = 69445
Step 96: 69445 + 731 = 70176
Step 97: 70176 + 731 = 70907
Step 98: 70907 + 731 = 71638
Step 99: 71638 + 731 = 72369
Step 100: 72369 + 731 = 73100
Step 101: 73100 + 731 = 73831
Step 102: 73831 + 731 = 74562
Step 103: 74562 + 731 = 75293
Step 104: 75293 + 731 = 76024
Step 105: 76024 + 731 = 76755
Step 106: 76755 + 731 = 77486
Step 107: 77486 + 731 = 78217
Step 108: 78217 + 731 = 78948
Step 109: 78948 + 731 = 79679
Step 110: 79679 + 731 = 80410
Step 111: 80410 + 731 = 81141
Step 112: 81141 + 731 = 81872
Step 113: 81872 + 731 = 82603
Step 114: 82603 + 731 = 83334
Step 115: 83334 + 731 = 84065
Step 116: 84065 + 731 = 84796
Step 117: 84796 + 731 = 85527
Step 118: 85527 + 731 = 86258
Step 119: 86258 + 731 = 86989
Step 120: 86989 + 731 = 87720
Step 121: 87720 + 731 = 88451
Step 122: 88451 + 731 = 89182
Step 123: 89182 + 731 = 89913
Step 124: 89913 + 731 = 90644
Step 125: 90644 + 731 = 91375
Step 126: 91375 + 731 = 92106
Step 127: 92106 + 731 = 92837
Step 128: 92837 + 731 = 93568
Step 129: 93568 + 731 = 94299
Step 130: 94299 + 731 = 95030
Step 131: 95030 + 731 = 95761
Step 132: 95761 + 731 = 96492
Step 133: 96492 + 731 = 97223
Step 134: 97223 + 731 = 97954
Step 135: 97954 + 731 = 98685
Step 136: 98685 + 731 = 99416
Step 137: 99416 + 731 = 100147
Step 138: 100147 + 731 = 100878
Step 139: 100878 + 731 = 101609
Step 140: 101609 + 731 = 102340
Step 141: 102340 + 731 = 103071
Step 142: 103071 + 731 = 103802
Step 143: 103802 + 731 = 104533
Step 144: 104533 + 731 = 105264
Step 145: 105264 + 731 = 105995
Step 146: 105995 + 731 = 106726
Step 147: 106726 + 731 = 107457
Step 148: 107457 + 731 = 108188
Step 149: 108188 + 731 = 108919
Step 150: 108919 + 731 = 109650
Step 151: 109650 + 731 = 110381
Step 152: 110381 + 731 = 111112
Step 153: 111112 + 731 = 111843
Step 154: 111843 + 731 = 112574
Step 155: 112574 + 731 = 113305
Step 156: 113305 + 731 = 114036
Step 157: 114036 + 731 = 114767
Step 158: 114767 + 731 = 115498
Step 159: 115498 + 731 = 116229
Step 160: 116229 + 731 = 116960
Step 161: 116960 + 731 = 117691
Step 162: 117691 + 731 = 118422
Step 163: 118422 + 731 = 119153
Step 164: 119153 + 731 = 119884
Step 165: 119884 + 731 = 120615
Step 166: 120615 + 731 = 121346
Step 167: 121346 + 731 = 122077
Step 168: 122077 + 731 = 122808
Step 169: 122808 + 731 = 123539
Step 170: 123539 + 731 = 124270
Step 171: 124270 + 731 = 125001
Step 172: 125001 + 731 = 125732
Step 173: 125732 + 731 = 126463
Step 174: 126463 + 731 = 127194
Step 175: 127194 + 731 = 127925
Step 176: 127925 + 731 = 128656
Step 177: 128656 + 731 = 129387
Step 178: 129387 + 731 = 130118
Step 179: 130118 + 731 = 130849
Step 180: 130849 + 731 = 131580
Step 181: 131580 + 731 = 132311
Step 182: 132311 + 731 = 133042
Step 183: 133042 + 731 = 133773
Step 184: 133773 + 731 = 134504
Step 185: 134504 + 731 = 135235
Step 186: 135235 + 731 = 135966
Step 187: 135966 + 731 = 136697
Step 188: 136697 + 731 = 137428
Step 189: 137428 + 731 = 138159
Step 190: 138159 + 731 = 138890
Step 191: 138890 + 731 = 139621
Step 192: 139621 + 731 = 140352
Step 193: 140352 + 731 = 141083
Step 194: 141083 + 731 = 141814
Step 195: 141814 + 731 = 142545
Step 196: 142545 + 731 = 143276
Step 197: 143276 + 731 = 144007
Step 198: 144007 + 731 = 144738
Step 199: 144738 + 731 = 145469
Step 200: 145469 + 731 = 146200
Step 201: 146200 + 731 = 146931
Step 202: 146931 + 731 = 147662
Step 203: 147662 + 731 = 148393
Step 204: 148393 + 731 = 149124
Step 205: 149124 + 731 = 149855
Step 206: 149855 + 731 = 150586
Step 207: 150586 + 731 = 151317
Step 208: 151317 + 731 = 152048
Step 209: 152048 + 731 = 152779
Step 210: 152779 + 731 = 153510
Step 211: 153510 + 731 = 154241
Step 212: 154241 + 731 = 154972
Step 213: 154972 + 731 = 155703
Step 214: 155703 + 731 = 156434
Step 215: 156434 + 731 = 157165
Step 216: 157165 + 731 = 157896
Step 217: 157896 + 731 = 158627
Step 218: 158627 + 731 = 159358
Step 219: 159358 + 731 = 160089
Step 220: 160089 + 731 = 160820
Step 221: 160820 + 731 = 161551
Step 222: 161551 + 731 = 162282
Step 223: 162282 + 731 = 163013
Step 224: 163013 + 731 = 163744
Step 225: 163744 + 731 = 164475
Step 226: 164475 + 731 = 165206
Step 227: 165206 + 731 = 165937
Step 228: 165937 + 731 = 166668
Step 229: 166668 + 731 = 167399
Step 230: 167399 + 731 = 168130
Step 231: 168130 + 731 = 168861
Step 232: 168861 + 731 = 169592
Step 233: 169592 + 731 = 170323
Step 234: 170323 + 731 = 171054
Step 235: 171054 + 731 = 171785
Step 236: 171785 + 731 = 172516
Step 237: 172516 + 731 = 173247
Step 238: 173247 + 731 = 173978
Step 239: 173978 + 731 = 174709
Step 240: 174709 + 731 = 175440
Step 241: 175440 + 731 = 176171
Step 242: 176171 + 731 = 176902
Step 243: 176902 + 731 = 177633
Step 244: 177633 + 731 = 178364
Step 245: 178364 + 731 = 179095
Step 246: 179095 + 731 = 179826
Step 247: 179826 + 731 = 180557
Step 248: 180557 + 731 = 181288
Step 249: 181288 + 731 = 182019
Step 250: 182019 + 731 = 182750
Step 251: 182750 + 731 = 183481
Step 252: 183481 + 731 = 184212
Step 253: 184212 + 731 = 184943
Step 254: 184943 + 731 = 185674
Step 255: 185674 + 731 = 186405
Step 256: 186405 + 731 = 187136
Step 257: 187136 + 731 = 187867

So, 731*257 = 187867