Alright, let's solve this math problem step by step. First, we have the number 42. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 403. So, we're going to take the number 42 and add it to itself 403 times.
Step 1: 0 + 42 = 42
Step 2: 42 + 42 = 84
Step 3: 84 + 42 = 126
Step 4: 126 + 42 = 168
Step 5: 168 + 42 = 210
Step 6: 210 + 42 = 252
Step 7: 252 + 42 = 294
Step 8: 294 + 42 = 336
Step 9: 336 + 42 = 378
Step 10: 378 + 42 = 420
Step 11: 420 + 42 = 462
Step 12: 462 + 42 = 504
Step 13: 504 + 42 = 546
Step 14: 546 + 42 = 588
Step 15: 588 + 42 = 630
Step 16: 630 + 42 = 672
Step 17: 672 + 42 = 714
Step 18: 714 + 42 = 756
Step 19: 756 + 42 = 798
Step 20: 798 + 42 = 840
Step 21: 840 + 42 = 882
Step 22: 882 + 42 = 924
Step 23: 924 + 42 = 966
Step 24: 966 + 42 = 1008
Step 25: 1008 + 42 = 1050
Step 26: 1050 + 42 = 1092
Step 27: 1092 + 42 = 1134
Step 28: 1134 + 42 = 1176
Step 29: 1176 + 42 = 1218
Step 30: 1218 + 42 = 1260
Step 31: 1260 + 42 = 1302
Step 32: 1302 + 42 = 1344
Step 33: 1344 + 42 = 1386
Step 34: 1386 + 42 = 1428
Step 35: 1428 + 42 = 1470
Step 36: 1470 + 42 = 1512
Step 37: 1512 + 42 = 1554
Step 38: 1554 + 42 = 1596
Step 39: 1596 + 42 = 1638
Step 40: 1638 + 42 = 1680
Step 41: 1680 + 42 = 1722
Step 42: 1722 + 42 = 1764
Step 43: 1764 + 42 = 1806
Step 44: 1806 + 42 = 1848
Step 45: 1848 + 42 = 1890
Step 46: 1890 + 42 = 1932
Step 47: 1932 + 42 = 1974
Step 48: 1974 + 42 = 2016
Step 49: 2016 + 42 = 2058
Step 50: 2058 + 42 = 2100
Step 51: 2100 + 42 = 2142
Step 52: 2142 + 42 = 2184
Step 53: 2184 + 42 = 2226
Step 54: 2226 + 42 = 2268
Step 55: 2268 + 42 = 2310
Step 56: 2310 + 42 = 2352
Step 57: 2352 + 42 = 2394
Step 58: 2394 + 42 = 2436
Step 59: 2436 + 42 = 2478
Step 60: 2478 + 42 = 2520
Step 61: 2520 + 42 = 2562
Step 62: 2562 + 42 = 2604
Step 63: 2604 + 42 = 2646
Step 64: 2646 + 42 = 2688
Step 65: 2688 + 42 = 2730
Step 66: 2730 + 42 = 2772
Step 67: 2772 + 42 = 2814
Step 68: 2814 + 42 = 2856
Step 69: 2856 + 42 = 2898
Step 70: 2898 + 42 = 2940
Step 71: 2940 + 42 = 2982
Step 72: 2982 + 42 = 3024
Step 73: 3024 + 42 = 3066
Step 74: 3066 + 42 = 3108
Step 75: 3108 + 42 = 3150
Step 76: 3150 + 42 = 3192
Step 77: 3192 + 42 = 3234
Step 78: 3234 + 42 = 3276
Step 79: 3276 + 42 = 3318
Step 80: 3318 + 42 = 3360
Step 81: 3360 + 42 = 3402
Step 82: 3402 + 42 = 3444
Step 83: 3444 + 42 = 3486
Step 84: 3486 + 42 = 3528
Step 85: 3528 + 42 = 3570
Step 86: 3570 + 42 = 3612
Step 87: 3612 + 42 = 3654
Step 88: 3654 + 42 = 3696
Step 89: 3696 + 42 = 3738
Step 90: 3738 + 42 = 3780
Step 91: 3780 + 42 = 3822
Step 92: 3822 + 42 = 3864
Step 93: 3864 + 42 = 3906
Step 94: 3906 + 42 = 3948
Step 95: 3948 + 42 = 3990
Step 96: 3990 + 42 = 4032
Step 97: 4032 + 42 = 4074
Step 98: 4074 + 42 = 4116
Step 99: 4116 + 42 = 4158
Step 100: 4158 + 42 = 4200
Step 101: 4200 + 42 = 4242
Step 102: 4242 + 42 = 4284
Step 103: 4284 + 42 = 4326
Step 104: 4326 + 42 = 4368
Step 105: 4368 + 42 = 4410
Step 106: 4410 + 42 = 4452
Step 107: 4452 + 42 = 4494
Step 108: 4494 + 42 = 4536
Step 109: 4536 + 42 = 4578
Step 110: 4578 + 42 = 4620
Step 111: 4620 + 42 = 4662
Step 112: 4662 + 42 = 4704
Step 113: 4704 + 42 = 4746
Step 114: 4746 + 42 = 4788
Step 115: 4788 + 42 = 4830
Step 116: 4830 + 42 = 4872
Step 117: 4872 + 42 = 4914
Step 118: 4914 + 42 = 4956
Step 119: 4956 + 42 = 4998
Step 120: 4998 + 42 = 5040
Step 121: 5040 + 42 = 5082
Step 122: 5082 + 42 = 5124
Step 123: 5124 + 42 = 5166
Step 124: 5166 + 42 = 5208
Step 125: 5208 + 42 = 5250
Step 126: 5250 + 42 = 5292
Step 127: 5292 + 42 = 5334
Step 128: 5334 + 42 = 5376
Step 129: 5376 + 42 = 5418
Step 130: 5418 + 42 = 5460
Step 131: 5460 + 42 = 5502
Step 132: 5502 + 42 = 5544
Step 133: 5544 + 42 = 5586
Step 134: 5586 + 42 = 5628
Step 135: 5628 + 42 = 5670
Step 136: 5670 + 42 = 5712
Step 137: 5712 + 42 = 5754
Step 138: 5754 + 42 = 5796
Step 139: 5796 + 42 = 5838
Step 140: 5838 + 42 = 5880
Step 141: 5880 + 42 = 5922
Step 142: 5922 + 42 = 5964
Step 143: 5964 + 42 = 6006
Step 144: 6006 + 42 = 6048
Step 145: 6048 + 42 = 6090
Step 146: 6090 + 42 = 6132
Step 147: 6132 + 42 = 6174
Step 148: 6174 + 42 = 6216
Step 149: 6216 + 42 = 6258
Step 150: 6258 + 42 = 6300
Step 151: 6300 + 42 = 6342
Step 152: 6342 + 42 = 6384
Step 153: 6384 + 42 = 6426
Step 154: 6426 + 42 = 6468
Step 155: 6468 + 42 = 6510
Step 156: 6510 + 42 = 6552
Step 157: 6552 + 42 = 6594
Step 158: 6594 + 42 = 6636
Step 159: 6636 + 42 = 6678
Step 160: 6678 + 42 = 6720
Step 161: 6720 + 42 = 6762
Step 162: 6762 + 42 = 6804
Step 163: 6804 + 42 = 6846
Step 164: 6846 + 42 = 6888
Step 165: 6888 + 42 = 6930
Step 166: 6930 + 42 = 6972
Step 167: 6972 + 42 = 7014
Step 168: 7014 + 42 = 7056
Step 169: 7056 + 42 = 7098
Step 170: 7098 + 42 = 7140
Step 171: 7140 + 42 = 7182
Step 172: 7182 + 42 = 7224
Step 173: 7224 + 42 = 7266
Step 174: 7266 + 42 = 7308
Step 175: 7308 + 42 = 7350
Step 176: 7350 + 42 = 7392
Step 177: 7392 + 42 = 7434
Step 178: 7434 + 42 = 7476
Step 179: 7476 + 42 = 7518
Step 180: 7518 + 42 = 7560
Step 181: 7560 + 42 = 7602
Step 182: 7602 + 42 = 7644
Step 183: 7644 + 42 = 7686
Step 184: 7686 + 42 = 7728
Step 185: 7728 + 42 = 7770
Step 186: 7770 + 42 = 7812
Step 187: 7812 + 42 = 7854
Step 188: 7854 + 42 = 7896
Step 189: 7896 + 42 = 7938
Step 190: 7938 + 42 = 7980
Step 191: 7980 + 42 = 8022
Step 192: 8022 + 42 = 8064
Step 193: 8064 + 42 = 8106
Step 194: 8106 + 42 = 8148
Step 195: 8148 + 42 = 8190
Step 196: 8190 + 42 = 8232
Step 197: 8232 + 42 = 8274
Step 198: 8274 + 42 = 8316
Step 199: 8316 + 42 = 8358
Step 200: 8358 + 42 = 8400
Step 201: 8400 + 42 = 8442
Step 202: 8442 + 42 = 8484
Step 203: 8484 + 42 = 8526
Step 204: 8526 + 42 = 8568
Step 205: 8568 + 42 = 8610
Step 206: 8610 + 42 = 8652
Step 207: 8652 + 42 = 8694
Step 208: 8694 + 42 = 8736
Step 209: 8736 + 42 = 8778
Step 210: 8778 + 42 = 8820
Step 211: 8820 + 42 = 8862
Step 212: 8862 + 42 = 8904
Step 213: 8904 + 42 = 8946
Step 214: 8946 + 42 = 8988
Step 215: 8988 + 42 = 9030
Step 216: 9030 + 42 = 9072
Step 217: 9072 + 42 = 9114
Step 218: 9114 + 42 = 9156
Step 219: 9156 + 42 = 9198
Step 220: 9198 + 42 = 9240
Step 221: 9240 + 42 = 9282
Step 222: 9282 + 42 = 9324
Step 223: 9324 + 42 = 9366
Step 224: 9366 + 42 = 9408
Step 225: 9408 + 42 = 9450
Step 226: 9450 + 42 = 9492
Step 227: 9492 + 42 = 9534
Step 228: 9534 + 42 = 9576
Step 229: 9576 + 42 = 9618
Step 230: 9618 + 42 = 9660
Step 231: 9660 + 42 = 9702
Step 232: 9702 + 42 = 9744
Step 233: 9744 + 42 = 9786
Step 234: 9786 + 42 = 9828
Step 235: 9828 + 42 = 9870
Step 236: 9870 + 42 = 9912
Step 237: 9912 + 42 = 9954
Step 238: 9954 + 42 = 9996
Step 239: 9996 + 42 = 10038
Step 240: 10038 + 42 = 10080
Step 241: 10080 + 42 = 10122
Step 242: 10122 + 42 = 10164
Step 243: 10164 + 42 = 10206
Step 244: 10206 + 42 = 10248
Step 245: 10248 + 42 = 10290
Step 246: 10290 + 42 = 10332
Step 247: 10332 + 42 = 10374
Step 248: 10374 + 42 = 10416
Step 249: 10416 + 42 = 10458
Step 250: 10458 + 42 = 10500
Step 251: 10500 + 42 = 10542
Step 252: 10542 + 42 = 10584
Step 253: 10584 + 42 = 10626
Step 254: 10626 + 42 = 10668
Step 255: 10668 + 42 = 10710
Step 256: 10710 + 42 = 10752
Step 257: 10752 + 42 = 10794
Step 258: 10794 + 42 = 10836
Step 259: 10836 + 42 = 10878
Step 260: 10878 + 42 = 10920
Step 261: 10920 + 42 = 10962
Step 262: 10962 + 42 = 11004
Step 263: 11004 + 42 = 11046
Step 264: 11046 + 42 = 11088
Step 265: 11088 + 42 = 11130
Step 266: 11130 + 42 = 11172
Step 267: 11172 + 42 = 11214
Step 268: 11214 + 42 = 11256
Step 269: 11256 + 42 = 11298
Step 270: 11298 + 42 = 11340
Step 271: 11340 + 42 = 11382
Step 272: 11382 + 42 = 11424
Step 273: 11424 + 42 = 11466
Step 274: 11466 + 42 = 11508
Step 275: 11508 + 42 = 11550
Step 276: 11550 + 42 = 11592
Step 277: 11592 + 42 = 11634
Step 278: 11634 + 42 = 11676
Step 279: 11676 + 42 = 11718
Step 280: 11718 + 42 = 11760
Step 281: 11760 + 42 = 11802
Step 282: 11802 + 42 = 11844
Step 283: 11844 + 42 = 11886
Step 284: 11886 + 42 = 11928
Step 285: 11928 + 42 = 11970
Step 286: 11970 + 42 = 12012
Step 287: 12012 + 42 = 12054
Step 288: 12054 + 42 = 12096
Step 289: 12096 + 42 = 12138
Step 290: 12138 + 42 = 12180
Step 291: 12180 + 42 = 12222
Step 292: 12222 + 42 = 12264
Step 293: 12264 + 42 = 12306
Step 294: 12306 + 42 = 12348
Step 295: 12348 + 42 = 12390
Step 296: 12390 + 42 = 12432
Step 297: 12432 + 42 = 12474
Step 298: 12474 + 42 = 12516
Step 299: 12516 + 42 = 12558
Step 300: 12558 + 42 = 12600
Step 301: 12600 + 42 = 12642
Step 302: 12642 + 42 = 12684
Step 303: 12684 + 42 = 12726
Step 304: 12726 + 42 = 12768
Step 305: 12768 + 42 = 12810
Step 306: 12810 + 42 = 12852
Step 307: 12852 + 42 = 12894
Step 308: 12894 + 42 = 12936
Step 309: 12936 + 42 = 12978
Step 310: 12978 + 42 = 13020
Step 311: 13020 + 42 = 13062
Step 312: 13062 + 42 = 13104
Step 313: 13104 + 42 = 13146
Step 314: 13146 + 42 = 13188
Step 315: 13188 + 42 = 13230
Step 316: 13230 + 42 = 13272
Step 317: 13272 + 42 = 13314
Step 318: 13314 + 42 = 13356
Step 319: 13356 + 42 = 13398
Step 320: 13398 + 42 = 13440
Step 321: 13440 + 42 = 13482
Step 322: 13482 + 42 = 13524
Step 323: 13524 + 42 = 13566
Step 324: 13566 + 42 = 13608
Step 325: 13608 + 42 = 13650
Step 326: 13650 + 42 = 13692
Step 327: 13692 + 42 = 13734
Step 328: 13734 + 42 = 13776
Step 329: 13776 + 42 = 13818
Step 330: 13818 + 42 = 13860
Step 331: 13860 + 42 = 13902
Step 332: 13902 + 42 = 13944
Step 333: 13944 + 42 = 13986
Step 334: 13986 + 42 = 14028
Step 335: 14028 + 42 = 14070
Step 336: 14070 + 42 = 14112
Step 337: 14112 + 42 = 14154
Step 338: 14154 + 42 = 14196
Step 339: 14196 + 42 = 14238
Step 340: 14238 + 42 = 14280
Step 341: 14280 + 42 = 14322
Step 342: 14322 + 42 = 14364
Step 343: 14364 + 42 = 14406
Step 344: 14406 + 42 = 14448
Step 345: 14448 + 42 = 14490
Step 346: 14490 + 42 = 14532
Step 347: 14532 + 42 = 14574
Step 348: 14574 + 42 = 14616
Step 349: 14616 + 42 = 14658
Step 350: 14658 + 42 = 14700
Step 351: 14700 + 42 = 14742
Step 352: 14742 + 42 = 14784
Step 353: 14784 + 42 = 14826
Step 354: 14826 + 42 = 14868
Step 355: 14868 + 42 = 14910
Step 356: 14910 + 42 = 14952
Step 357: 14952 + 42 = 14994
Step 358: 14994 + 42 = 15036
Step 359: 15036 + 42 = 15078
Step 360: 15078 + 42 = 15120
Step 361: 15120 + 42 = 15162
Step 362: 15162 + 42 = 15204
Step 363: 15204 + 42 = 15246
Step 364: 15246 + 42 = 15288
Step 365: 15288 + 42 = 15330
Step 366: 15330 + 42 = 15372
Step 367: 15372 + 42 = 15414
Step 368: 15414 + 42 = 15456
Step 369: 15456 + 42 = 15498
Step 370: 15498 + 42 = 15540
Step 371: 15540 + 42 = 15582
Step 372: 15582 + 42 = 15624
Step 373: 15624 + 42 = 15666
Step 374: 15666 + 42 = 15708
Step 375: 15708 + 42 = 15750
Step 376: 15750 + 42 = 15792
Step 377: 15792 + 42 = 15834
Step 378: 15834 + 42 = 15876
Step 379: 15876 + 42 = 15918
Step 380: 15918 + 42 = 15960
Step 381: 15960 + 42 = 16002
Step 382: 16002 + 42 = 16044
Step 383: 16044 + 42 = 16086
Step 384: 16086 + 42 = 16128
Step 385: 16128 + 42 = 16170
Step 386: 16170 + 42 = 16212
Step 387: 16212 + 42 = 16254
Step 388: 16254 + 42 = 16296
Step 389: 16296 + 42 = 16338
Step 390: 16338 + 42 = 16380
Step 391: 16380 + 42 = 16422
Step 392: 16422 + 42 = 16464
Step 393: 16464 + 42 = 16506
Step 394: 16506 + 42 = 16548
Step 395: 16548 + 42 = 16590
Step 396: 16590 + 42 = 16632
Step 397: 16632 + 42 = 16674
Step 398: 16674 + 42 = 16716
Step 399: 16716 + 42 = 16758
Step 400: 16758 + 42 = 16800
Step 401: 16800 + 42 = 16842
Step 402: 16842 + 42 = 16884
Step 403: 16884 + 42 = 16926

So, 42*403 = 16926