Alright, let's solve this math problem step by step. First, we have the number 403. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 400. So, we're going to take the number 403 and add it to itself 400 times.
Step 1: 0 + 403 = 403
Step 2: 403 + 403 = 806
Step 3: 806 + 403 = 1209
Step 4: 1209 + 403 = 1612
Step 5: 1612 + 403 = 2015
Step 6: 2015 + 403 = 2418
Step 7: 2418 + 403 = 2821
Step 8: 2821 + 403 = 3224
Step 9: 3224 + 403 = 3627
Step 10: 3627 + 403 = 4030
Step 11: 4030 + 403 = 4433
Step 12: 4433 + 403 = 4836
Step 13: 4836 + 403 = 5239
Step 14: 5239 + 403 = 5642
Step 15: 5642 + 403 = 6045
Step 16: 6045 + 403 = 6448
Step 17: 6448 + 403 = 6851
Step 18: 6851 + 403 = 7254
Step 19: 7254 + 403 = 7657
Step 20: 7657 + 403 = 8060
Step 21: 8060 + 403 = 8463
Step 22: 8463 + 403 = 8866
Step 23: 8866 + 403 = 9269
Step 24: 9269 + 403 = 9672
Step 25: 9672 + 403 = 10075
Step 26: 10075 + 403 = 10478
Step 27: 10478 + 403 = 10881
Step 28: 10881 + 403 = 11284
Step 29: 11284 + 403 = 11687
Step 30: 11687 + 403 = 12090
Step 31: 12090 + 403 = 12493
Step 32: 12493 + 403 = 12896
Step 33: 12896 + 403 = 13299
Step 34: 13299 + 403 = 13702
Step 35: 13702 + 403 = 14105
Step 36: 14105 + 403 = 14508
Step 37: 14508 + 403 = 14911
Step 38: 14911 + 403 = 15314
Step 39: 15314 + 403 = 15717
Step 40: 15717 + 403 = 16120
Step 41: 16120 + 403 = 16523
Step 42: 16523 + 403 = 16926
Step 43: 16926 + 403 = 17329
Step 44: 17329 + 403 = 17732
Step 45: 17732 + 403 = 18135
Step 46: 18135 + 403 = 18538
Step 47: 18538 + 403 = 18941
Step 48: 18941 + 403 = 19344
Step 49: 19344 + 403 = 19747
Step 50: 19747 + 403 = 20150
Step 51: 20150 + 403 = 20553
Step 52: 20553 + 403 = 20956
Step 53: 20956 + 403 = 21359
Step 54: 21359 + 403 = 21762
Step 55: 21762 + 403 = 22165
Step 56: 22165 + 403 = 22568
Step 57: 22568 + 403 = 22971
Step 58: 22971 + 403 = 23374
Step 59: 23374 + 403 = 23777
Step 60: 23777 + 403 = 24180
Step 61: 24180 + 403 = 24583
Step 62: 24583 + 403 = 24986
Step 63: 24986 + 403 = 25389
Step 64: 25389 + 403 = 25792
Step 65: 25792 + 403 = 26195
Step 66: 26195 + 403 = 26598
Step 67: 26598 + 403 = 27001
Step 68: 27001 + 403 = 27404
Step 69: 27404 + 403 = 27807
Step 70: 27807 + 403 = 28210
Step 71: 28210 + 403 = 28613
Step 72: 28613 + 403 = 29016
Step 73: 29016 + 403 = 29419
Step 74: 29419 + 403 = 29822
Step 75: 29822 + 403 = 30225
Step 76: 30225 + 403 = 30628
Step 77: 30628 + 403 = 31031
Step 78: 31031 + 403 = 31434
Step 79: 31434 + 403 = 31837
Step 80: 31837 + 403 = 32240
Step 81: 32240 + 403 = 32643
Step 82: 32643 + 403 = 33046
Step 83: 33046 + 403 = 33449
Step 84: 33449 + 403 = 33852
Step 85: 33852 + 403 = 34255
Step 86: 34255 + 403 = 34658
Step 87: 34658 + 403 = 35061
Step 88: 35061 + 403 = 35464
Step 89: 35464 + 403 = 35867
Step 90: 35867 + 403 = 36270
Step 91: 36270 + 403 = 36673
Step 92: 36673 + 403 = 37076
Step 93: 37076 + 403 = 37479
Step 94: 37479 + 403 = 37882
Step 95: 37882 + 403 = 38285
Step 96: 38285 + 403 = 38688
Step 97: 38688 + 403 = 39091
Step 98: 39091 + 403 = 39494
Step 99: 39494 + 403 = 39897
Step 100: 39897 + 403 = 40300
Step 101: 40300 + 403 = 40703
Step 102: 40703 + 403 = 41106
Step 103: 41106 + 403 = 41509
Step 104: 41509 + 403 = 41912
Step 105: 41912 + 403 = 42315
Step 106: 42315 + 403 = 42718
Step 107: 42718 + 403 = 43121
Step 108: 43121 + 403 = 43524
Step 109: 43524 + 403 = 43927
Step 110: 43927 + 403 = 44330
Step 111: 44330 + 403 = 44733
Step 112: 44733 + 403 = 45136
Step 113: 45136 + 403 = 45539
Step 114: 45539 + 403 = 45942
Step 115: 45942 + 403 = 46345
Step 116: 46345 + 403 = 46748
Step 117: 46748 + 403 = 47151
Step 118: 47151 + 403 = 47554
Step 119: 47554 + 403 = 47957
Step 120: 47957 + 403 = 48360
Step 121: 48360 + 403 = 48763
Step 122: 48763 + 403 = 49166
Step 123: 49166 + 403 = 49569
Step 124: 49569 + 403 = 49972
Step 125: 49972 + 403 = 50375
Step 126: 50375 + 403 = 50778
Step 127: 50778 + 403 = 51181
Step 128: 51181 + 403 = 51584
Step 129: 51584 + 403 = 51987
Step 130: 51987 + 403 = 52390
Step 131: 52390 + 403 = 52793
Step 132: 52793 + 403 = 53196
Step 133: 53196 + 403 = 53599
Step 134: 53599 + 403 = 54002
Step 135: 54002 + 403 = 54405
Step 136: 54405 + 403 = 54808
Step 137: 54808 + 403 = 55211
Step 138: 55211 + 403 = 55614
Step 139: 55614 + 403 = 56017
Step 140: 56017 + 403 = 56420
Step 141: 56420 + 403 = 56823
Step 142: 56823 + 403 = 57226
Step 143: 57226 + 403 = 57629
Step 144: 57629 + 403 = 58032
Step 145: 58032 + 403 = 58435
Step 146: 58435 + 403 = 58838
Step 147: 58838 + 403 = 59241
Step 148: 59241 + 403 = 59644
Step 149: 59644 + 403 = 60047
Step 150: 60047 + 403 = 60450
Step 151: 60450 + 403 = 60853
Step 152: 60853 + 403 = 61256
Step 153: 61256 + 403 = 61659
Step 154: 61659 + 403 = 62062
Step 155: 62062 + 403 = 62465
Step 156: 62465 + 403 = 62868
Step 157: 62868 + 403 = 63271
Step 158: 63271 + 403 = 63674
Step 159: 63674 + 403 = 64077
Step 160: 64077 + 403 = 64480
Step 161: 64480 + 403 = 64883
Step 162: 64883 + 403 = 65286
Step 163: 65286 + 403 = 65689
Step 164: 65689 + 403 = 66092
Step 165: 66092 + 403 = 66495
Step 166: 66495 + 403 = 66898
Step 167: 66898 + 403 = 67301
Step 168: 67301 + 403 = 67704
Step 169: 67704 + 403 = 68107
Step 170: 68107 + 403 = 68510
Step 171: 68510 + 403 = 68913
Step 172: 68913 + 403 = 69316
Step 173: 69316 + 403 = 69719
Step 174: 69719 + 403 = 70122
Step 175: 70122 + 403 = 70525
Step 176: 70525 + 403 = 70928
Step 177: 70928 + 403 = 71331
Step 178: 71331 + 403 = 71734
Step 179: 71734 + 403 = 72137
Step 180: 72137 + 403 = 72540
Step 181: 72540 + 403 = 72943
Step 182: 72943 + 403 = 73346
Step 183: 73346 + 403 = 73749
Step 184: 73749 + 403 = 74152
Step 185: 74152 + 403 = 74555
Step 186: 74555 + 403 = 74958
Step 187: 74958 + 403 = 75361
Step 188: 75361 + 403 = 75764
Step 189: 75764 + 403 = 76167
Step 190: 76167 + 403 = 76570
Step 191: 76570 + 403 = 76973
Step 192: 76973 + 403 = 77376
Step 193: 77376 + 403 = 77779
Step 194: 77779 + 403 = 78182
Step 195: 78182 + 403 = 78585
Step 196: 78585 + 403 = 78988
Step 197: 78988 + 403 = 79391
Step 198: 79391 + 403 = 79794
Step 199: 79794 + 403 = 80197
Step 200: 80197 + 403 = 80600
Step 201: 80600 + 403 = 81003
Step 202: 81003 + 403 = 81406
Step 203: 81406 + 403 = 81809
Step 204: 81809 + 403 = 82212
Step 205: 82212 + 403 = 82615
Step 206: 82615 + 403 = 83018
Step 207: 83018 + 403 = 83421
Step 208: 83421 + 403 = 83824
Step 209: 83824 + 403 = 84227
Step 210: 84227 + 403 = 84630
Step 211: 84630 + 403 = 85033
Step 212: 85033 + 403 = 85436
Step 213: 85436 + 403 = 85839
Step 214: 85839 + 403 = 86242
Step 215: 86242 + 403 = 86645
Step 216: 86645 + 403 = 87048
Step 217: 87048 + 403 = 87451
Step 218: 87451 + 403 = 87854
Step 219: 87854 + 403 = 88257
Step 220: 88257 + 403 = 88660
Step 221: 88660 + 403 = 89063
Step 222: 89063 + 403 = 89466
Step 223: 89466 + 403 = 89869
Step 224: 89869 + 403 = 90272
Step 225: 90272 + 403 = 90675
Step 226: 90675 + 403 = 91078
Step 227: 91078 + 403 = 91481
Step 228: 91481 + 403 = 91884
Step 229: 91884 + 403 = 92287
Step 230: 92287 + 403 = 92690
Step 231: 92690 + 403 = 93093
Step 232: 93093 + 403 = 93496
Step 233: 93496 + 403 = 93899
Step 234: 93899 + 403 = 94302
Step 235: 94302 + 403 = 94705
Step 236: 94705 + 403 = 95108
Step 237: 95108 + 403 = 95511
Step 238: 95511 + 403 = 95914
Step 239: 95914 + 403 = 96317
Step 240: 96317 + 403 = 96720
Step 241: 96720 + 403 = 97123
Step 242: 97123 + 403 = 97526
Step 243: 97526 + 403 = 97929
Step 244: 97929 + 403 = 98332
Step 245: 98332 + 403 = 98735
Step 246: 98735 + 403 = 99138
Step 247: 99138 + 403 = 99541
Step 248: 99541 + 403 = 99944
Step 249: 99944 + 403 = 100347
Step 250: 100347 + 403 = 100750
Step 251: 100750 + 403 = 101153
Step 252: 101153 + 403 = 101556
Step 253: 101556 + 403 = 101959
Step 254: 101959 + 403 = 102362
Step 255: 102362 + 403 = 102765
Step 256: 102765 + 403 = 103168
Step 257: 103168 + 403 = 103571
Step 258: 103571 + 403 = 103974
Step 259: 103974 + 403 = 104377
Step 260: 104377 + 403 = 104780
Step 261: 104780 + 403 = 105183
Step 262: 105183 + 403 = 105586
Step 263: 105586 + 403 = 105989
Step 264: 105989 + 403 = 106392
Step 265: 106392 + 403 = 106795
Step 266: 106795 + 403 = 107198
Step 267: 107198 + 403 = 107601
Step 268: 107601 + 403 = 108004
Step 269: 108004 + 403 = 108407
Step 270: 108407 + 403 = 108810
Step 271: 108810 + 403 = 109213
Step 272: 109213 + 403 = 109616
Step 273: 109616 + 403 = 110019
Step 274: 110019 + 403 = 110422
Step 275: 110422 + 403 = 110825
Step 276: 110825 + 403 = 111228
Step 277: 111228 + 403 = 111631
Step 278: 111631 + 403 = 112034
Step 279: 112034 + 403 = 112437
Step 280: 112437 + 403 = 112840
Step 281: 112840 + 403 = 113243
Step 282: 113243 + 403 = 113646
Step 283: 113646 + 403 = 114049
Step 284: 114049 + 403 = 114452
Step 285: 114452 + 403 = 114855
Step 286: 114855 + 403 = 115258
Step 287: 115258 + 403 = 115661
Step 288: 115661 + 403 = 116064
Step 289: 116064 + 403 = 116467
Step 290: 116467 + 403 = 116870
Step 291: 116870 + 403 = 117273
Step 292: 117273 + 403 = 117676
Step 293: 117676 + 403 = 118079
Step 294: 118079 + 403 = 118482
Step 295: 118482 + 403 = 118885
Step 296: 118885 + 403 = 119288
Step 297: 119288 + 403 = 119691
Step 298: 119691 + 403 = 120094
Step 299: 120094 + 403 = 120497
Step 300: 120497 + 403 = 120900
Step 301: 120900 + 403 = 121303
Step 302: 121303 + 403 = 121706
Step 303: 121706 + 403 = 122109
Step 304: 122109 + 403 = 122512
Step 305: 122512 + 403 = 122915
Step 306: 122915 + 403 = 123318
Step 307: 123318 + 403 = 123721
Step 308: 123721 + 403 = 124124
Step 309: 124124 + 403 = 124527
Step 310: 124527 + 403 = 124930
Step 311: 124930 + 403 = 125333
Step 312: 125333 + 403 = 125736
Step 313: 125736 + 403 = 126139
Step 314: 126139 + 403 = 126542
Step 315: 126542 + 403 = 126945
Step 316: 126945 + 403 = 127348
Step 317: 127348 + 403 = 127751
Step 318: 127751 + 403 = 128154
Step 319: 128154 + 403 = 128557
Step 320: 128557 + 403 = 128960
Step 321: 128960 + 403 = 129363
Step 322: 129363 + 403 = 129766
Step 323: 129766 + 403 = 130169
Step 324: 130169 + 403 = 130572
Step 325: 130572 + 403 = 130975
Step 326: 130975 + 403 = 131378
Step 327: 131378 + 403 = 131781
Step 328: 131781 + 403 = 132184
Step 329: 132184 + 403 = 132587
Step 330: 132587 + 403 = 132990
Step 331: 132990 + 403 = 133393
Step 332: 133393 + 403 = 133796
Step 333: 133796 + 403 = 134199
Step 334: 134199 + 403 = 134602
Step 335: 134602 + 403 = 135005
Step 336: 135005 + 403 = 135408
Step 337: 135408 + 403 = 135811
Step 338: 135811 + 403 = 136214
Step 339: 136214 + 403 = 136617
Step 340: 136617 + 403 = 137020
Step 341: 137020 + 403 = 137423
Step 342: 137423 + 403 = 137826
Step 343: 137826 + 403 = 138229
Step 344: 138229 + 403 = 138632
Step 345: 138632 + 403 = 139035
Step 346: 139035 + 403 = 139438
Step 347: 139438 + 403 = 139841
Step 348: 139841 + 403 = 140244
Step 349: 140244 + 403 = 140647
Step 350: 140647 + 403 = 141050
Step 351: 141050 + 403 = 141453
Step 352: 141453 + 403 = 141856
Step 353: 141856 + 403 = 142259
Step 354: 142259 + 403 = 142662
Step 355: 142662 + 403 = 143065
Step 356: 143065 + 403 = 143468
Step 357: 143468 + 403 = 143871
Step 358: 143871 + 403 = 144274
Step 359: 144274 + 403 = 144677
Step 360: 144677 + 403 = 145080
Step 361: 145080 + 403 = 145483
Step 362: 145483 + 403 = 145886
Step 363: 145886 + 403 = 146289
Step 364: 146289 + 403 = 146692
Step 365: 146692 + 403 = 147095
Step 366: 147095 + 403 = 147498
Step 367: 147498 + 403 = 147901
Step 368: 147901 + 403 = 148304
Step 369: 148304 + 403 = 148707
Step 370: 148707 + 403 = 149110
Step 371: 149110 + 403 = 149513
Step 372: 149513 + 403 = 149916
Step 373: 149916 + 403 = 150319
Step 374: 150319 + 403 = 150722
Step 375: 150722 + 403 = 151125
Step 376: 151125 + 403 = 151528
Step 377: 151528 + 403 = 151931
Step 378: 151931 + 403 = 152334
Step 379: 152334 + 403 = 152737
Step 380: 152737 + 403 = 153140
Step 381: 153140 + 403 = 153543
Step 382: 153543 + 403 = 153946
Step 383: 153946 + 403 = 154349
Step 384: 154349 + 403 = 154752
Step 385: 154752 + 403 = 155155
Step 386: 155155 + 403 = 155558
Step 387: 155558 + 403 = 155961
Step 388: 155961 + 403 = 156364
Step 389: 156364 + 403 = 156767
Step 390: 156767 + 403 = 157170
Step 391: 157170 + 403 = 157573
Step 392: 157573 + 403 = 157976
Step 393: 157976 + 403 = 158379
Step 394: 158379 + 403 = 158782
Step 395: 158782 + 403 = 159185
Step 396: 159185 + 403 = 159588
Step 397: 159588 + 403 = 159991
Step 398: 159991 + 403 = 160394
Step 399: 160394 + 403 = 160797
Step 400: 160797 + 403 = 161200

So, 403*400 = 161200