Alright, let's solve this math problem step by step. First, we have the number 143. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 357. So, we're going to take the number 143 and add it to itself 357 times.
Step 1: 0 + 143 = 143
Step 2: 143 + 143 = 286
Step 3: 286 + 143 = 429
Step 4: 429 + 143 = 572
Step 5: 572 + 143 = 715
Step 6: 715 + 143 = 858
Step 7: 858 + 143 = 1001
Step 8: 1001 + 143 = 1144
Step 9: 1144 + 143 = 1287
Step 10: 1287 + 143 = 1430
Step 11: 1430 + 143 = 1573
Step 12: 1573 + 143 = 1716
Step 13: 1716 + 143 = 1859
Step 14: 1859 + 143 = 2002
Step 15: 2002 + 143 = 2145
Step 16: 2145 + 143 = 2288
Step 17: 2288 + 143 = 2431
Step 18: 2431 + 143 = 2574
Step 19: 2574 + 143 = 2717
Step 20: 2717 + 143 = 2860
Step 21: 2860 + 143 = 3003
Step 22: 3003 + 143 = 3146
Step 23: 3146 + 143 = 3289
Step 24: 3289 + 143 = 3432
Step 25: 3432 + 143 = 3575
Step 26: 3575 + 143 = 3718
Step 27: 3718 + 143 = 3861
Step 28: 3861 + 143 = 4004
Step 29: 4004 + 143 = 4147
Step 30: 4147 + 143 = 4290
Step 31: 4290 + 143 = 4433
Step 32: 4433 + 143 = 4576
Step 33: 4576 + 143 = 4719
Step 34: 4719 + 143 = 4862
Step 35: 4862 + 143 = 5005
Step 36: 5005 + 143 = 5148
Step 37: 5148 + 143 = 5291
Step 38: 5291 + 143 = 5434
Step 39: 5434 + 143 = 5577
Step 40: 5577 + 143 = 5720
Step 41: 5720 + 143 = 5863
Step 42: 5863 + 143 = 6006
Step 43: 6006 + 143 = 6149
Step 44: 6149 + 143 = 6292
Step 45: 6292 + 143 = 6435
Step 46: 6435 + 143 = 6578
Step 47: 6578 + 143 = 6721
Step 48: 6721 + 143 = 6864
Step 49: 6864 + 143 = 7007
Step 50: 7007 + 143 = 7150
Step 51: 7150 + 143 = 7293
Step 52: 7293 + 143 = 7436
Step 53: 7436 + 143 = 7579
Step 54: 7579 + 143 = 7722
Step 55: 7722 + 143 = 7865
Step 56: 7865 + 143 = 8008
Step 57: 8008 + 143 = 8151
Step 58: 8151 + 143 = 8294
Step 59: 8294 + 143 = 8437
Step 60: 8437 + 143 = 8580
Step 61: 8580 + 143 = 8723
Step 62: 8723 + 143 = 8866
Step 63: 8866 + 143 = 9009
Step 64: 9009 + 143 = 9152
Step 65: 9152 + 143 = 9295
Step 66: 9295 + 143 = 9438
Step 67: 9438 + 143 = 9581
Step 68: 9581 + 143 = 9724
Step 69: 9724 + 143 = 9867
Step 70: 9867 + 143 = 10010
Step 71: 10010 + 143 = 10153
Step 72: 10153 + 143 = 10296
Step 73: 10296 + 143 = 10439
Step 74: 10439 + 143 = 10582
Step 75: 10582 + 143 = 10725
Step 76: 10725 + 143 = 10868
Step 77: 10868 + 143 = 11011
Step 78: 11011 + 143 = 11154
Step 79: 11154 + 143 = 11297
Step 80: 11297 + 143 = 11440
Step 81: 11440 + 143 = 11583
Step 82: 11583 + 143 = 11726
Step 83: 11726 + 143 = 11869
Step 84: 11869 + 143 = 12012
Step 85: 12012 + 143 = 12155
Step 86: 12155 + 143 = 12298
Step 87: 12298 + 143 = 12441
Step 88: 12441 + 143 = 12584
Step 89: 12584 + 143 = 12727
Step 90: 12727 + 143 = 12870
Step 91: 12870 + 143 = 13013
Step 92: 13013 + 143 = 13156
Step 93: 13156 + 143 = 13299
Step 94: 13299 + 143 = 13442
Step 95: 13442 + 143 = 13585
Step 96: 13585 + 143 = 13728
Step 97: 13728 + 143 = 13871
Step 98: 13871 + 143 = 14014
Step 99: 14014 + 143 = 14157
Step 100: 14157 + 143 = 14300
Step 101: 14300 + 143 = 14443
Step 102: 14443 + 143 = 14586
Step 103: 14586 + 143 = 14729
Step 104: 14729 + 143 = 14872
Step 105: 14872 + 143 = 15015
Step 106: 15015 + 143 = 15158
Step 107: 15158 + 143 = 15301
Step 108: 15301 + 143 = 15444
Step 109: 15444 + 143 = 15587
Step 110: 15587 + 143 = 15730
Step 111: 15730 + 143 = 15873
Step 112: 15873 + 143 = 16016
Step 113: 16016 + 143 = 16159
Step 114: 16159 + 143 = 16302
Step 115: 16302 + 143 = 16445
Step 116: 16445 + 143 = 16588
Step 117: 16588 + 143 = 16731
Step 118: 16731 + 143 = 16874
Step 119: 16874 + 143 = 17017
Step 120: 17017 + 143 = 17160
Step 121: 17160 + 143 = 17303
Step 122: 17303 + 143 = 17446
Step 123: 17446 + 143 = 17589
Step 124: 17589 + 143 = 17732
Step 125: 17732 + 143 = 17875
Step 126: 17875 + 143 = 18018
Step 127: 18018 + 143 = 18161
Step 128: 18161 + 143 = 18304
Step 129: 18304 + 143 = 18447
Step 130: 18447 + 143 = 18590
Step 131: 18590 + 143 = 18733
Step 132: 18733 + 143 = 18876
Step 133: 18876 + 143 = 19019
Step 134: 19019 + 143 = 19162
Step 135: 19162 + 143 = 19305
Step 136: 19305 + 143 = 19448
Step 137: 19448 + 143 = 19591
Step 138: 19591 + 143 = 19734
Step 139: 19734 + 143 = 19877
Step 140: 19877 + 143 = 20020
Step 141: 20020 + 143 = 20163
Step 142: 20163 + 143 = 20306
Step 143: 20306 + 143 = 20449
Step 144: 20449 + 143 = 20592
Step 145: 20592 + 143 = 20735
Step 146: 20735 + 143 = 20878
Step 147: 20878 + 143 = 21021
Step 148: 21021 + 143 = 21164
Step 149: 21164 + 143 = 21307
Step 150: 21307 + 143 = 21450
Step 151: 21450 + 143 = 21593
Step 152: 21593 + 143 = 21736
Step 153: 21736 + 143 = 21879
Step 154: 21879 + 143 = 22022
Step 155: 22022 + 143 = 22165
Step 156: 22165 + 143 = 22308
Step 157: 22308 + 143 = 22451
Step 158: 22451 + 143 = 22594
Step 159: 22594 + 143 = 22737
Step 160: 22737 + 143 = 22880
Step 161: 22880 + 143 = 23023
Step 162: 23023 + 143 = 23166
Step 163: 23166 + 143 = 23309
Step 164: 23309 + 143 = 23452
Step 165: 23452 + 143 = 23595
Step 166: 23595 + 143 = 23738
Step 167: 23738 + 143 = 23881
Step 168: 23881 + 143 = 24024
Step 169: 24024 + 143 = 24167
Step 170: 24167 + 143 = 24310
Step 171: 24310 + 143 = 24453
Step 172: 24453 + 143 = 24596
Step 173: 24596 + 143 = 24739
Step 174: 24739 + 143 = 24882
Step 175: 24882 + 143 = 25025
Step 176: 25025 + 143 = 25168
Step 177: 25168 + 143 = 25311
Step 178: 25311 + 143 = 25454
Step 179: 25454 + 143 = 25597
Step 180: 25597 + 143 = 25740
Step 181: 25740 + 143 = 25883
Step 182: 25883 + 143 = 26026
Step 183: 26026 + 143 = 26169
Step 184: 26169 + 143 = 26312
Step 185: 26312 + 143 = 26455
Step 186: 26455 + 143 = 26598
Step 187: 26598 + 143 = 26741
Step 188: 26741 + 143 = 26884
Step 189: 26884 + 143 = 27027
Step 190: 27027 + 143 = 27170
Step 191: 27170 + 143 = 27313
Step 192: 27313 + 143 = 27456
Step 193: 27456 + 143 = 27599
Step 194: 27599 + 143 = 27742
Step 195: 27742 + 143 = 27885
Step 196: 27885 + 143 = 28028
Step 197: 28028 + 143 = 28171
Step 198: 28171 + 143 = 28314
Step 199: 28314 + 143 = 28457
Step 200: 28457 + 143 = 28600
Step 201: 28600 + 143 = 28743
Step 202: 28743 + 143 = 28886
Step 203: 28886 + 143 = 29029
Step 204: 29029 + 143 = 29172
Step 205: 29172 + 143 = 29315
Step 206: 29315 + 143 = 29458
Step 207: 29458 + 143 = 29601
Step 208: 29601 + 143 = 29744
Step 209: 29744 + 143 = 29887
Step 210: 29887 + 143 = 30030
Step 211: 30030 + 143 = 30173
Step 212: 30173 + 143 = 30316
Step 213: 30316 + 143 = 30459
Step 214: 30459 + 143 = 30602
Step 215: 30602 + 143 = 30745
Step 216: 30745 + 143 = 30888
Step 217: 30888 + 143 = 31031
Step 218: 31031 + 143 = 31174
Step 219: 31174 + 143 = 31317
Step 220: 31317 + 143 = 31460
Step 221: 31460 + 143 = 31603
Step 222: 31603 + 143 = 31746
Step 223: 31746 + 143 = 31889
Step 224: 31889 + 143 = 32032
Step 225: 32032 + 143 = 32175
Step 226: 32175 + 143 = 32318
Step 227: 32318 + 143 = 32461
Step 228: 32461 + 143 = 32604
Step 229: 32604 + 143 = 32747
Step 230: 32747 + 143 = 32890
Step 231: 32890 + 143 = 33033
Step 232: 33033 + 143 = 33176
Step 233: 33176 + 143 = 33319
Step 234: 33319 + 143 = 33462
Step 235: 33462 + 143 = 33605
Step 236: 33605 + 143 = 33748
Step 237: 33748 + 143 = 33891
Step 238: 33891 + 143 = 34034
Step 239: 34034 + 143 = 34177
Step 240: 34177 + 143 = 34320
Step 241: 34320 + 143 = 34463
Step 242: 34463 + 143 = 34606
Step 243: 34606 + 143 = 34749
Step 244: 34749 + 143 = 34892
Step 245: 34892 + 143 = 35035
Step 246: 35035 + 143 = 35178
Step 247: 35178 + 143 = 35321
Step 248: 35321 + 143 = 35464
Step 249: 35464 + 143 = 35607
Step 250: 35607 + 143 = 35750
Step 251: 35750 + 143 = 35893
Step 252: 35893 + 143 = 36036
Step 253: 36036 + 143 = 36179
Step 254: 36179 + 143 = 36322
Step 255: 36322 + 143 = 36465
Step 256: 36465 + 143 = 36608
Step 257: 36608 + 143 = 36751
Step 258: 36751 + 143 = 36894
Step 259: 36894 + 143 = 37037
Step 260: 37037 + 143 = 37180
Step 261: 37180 + 143 = 37323
Step 262: 37323 + 143 = 37466
Step 263: 37466 + 143 = 37609
Step 264: 37609 + 143 = 37752
Step 265: 37752 + 143 = 37895
Step 266: 37895 + 143 = 38038
Step 267: 38038 + 143 = 38181
Step 268: 38181 + 143 = 38324
Step 269: 38324 + 143 = 38467
Step 270: 38467 + 143 = 38610
Step 271: 38610 + 143 = 38753
Step 272: 38753 + 143 = 38896
Step 273: 38896 + 143 = 39039
Step 274: 39039 + 143 = 39182
Step 275: 39182 + 143 = 39325
Step 276: 39325 + 143 = 39468
Step 277: 39468 + 143 = 39611
Step 278: 39611 + 143 = 39754
Step 279: 39754 + 143 = 39897
Step 280: 39897 + 143 = 40040
Step 281: 40040 + 143 = 40183
Step 282: 40183 + 143 = 40326
Step 283: 40326 + 143 = 40469
Step 284: 40469 + 143 = 40612
Step 285: 40612 + 143 = 40755
Step 286: 40755 + 143 = 40898
Step 287: 40898 + 143 = 41041
Step 288: 41041 + 143 = 41184
Step 289: 41184 + 143 = 41327
Step 290: 41327 + 143 = 41470
Step 291: 41470 + 143 = 41613
Step 292: 41613 + 143 = 41756
Step 293: 41756 + 143 = 41899
Step 294: 41899 + 143 = 42042
Step 295: 42042 + 143 = 42185
Step 296: 42185 + 143 = 42328
Step 297: 42328 + 143 = 42471
Step 298: 42471 + 143 = 42614
Step 299: 42614 + 143 = 42757
Step 300: 42757 + 143 = 42900
Step 301: 42900 + 143 = 43043
Step 302: 43043 + 143 = 43186
Step 303: 43186 + 143 = 43329
Step 304: 43329 + 143 = 43472
Step 305: 43472 + 143 = 43615
Step 306: 43615 + 143 = 43758
Step 307: 43758 + 143 = 43901
Step 308: 43901 + 143 = 44044
Step 309: 44044 + 143 = 44187
Step 310: 44187 + 143 = 44330
Step 311: 44330 + 143 = 44473
Step 312: 44473 + 143 = 44616
Step 313: 44616 + 143 = 44759
Step 314: 44759 + 143 = 44902
Step 315: 44902 + 143 = 45045
Step 316: 45045 + 143 = 45188
Step 317: 45188 + 143 = 45331
Step 318: 45331 + 143 = 45474
Step 319: 45474 + 143 = 45617
Step 320: 45617 + 143 = 45760
Step 321: 45760 + 143 = 45903
Step 322: 45903 + 143 = 46046
Step 323: 46046 + 143 = 46189
Step 324: 46189 + 143 = 46332
Step 325: 46332 + 143 = 46475
Step 326: 46475 + 143 = 46618
Step 327: 46618 + 143 = 46761
Step 328: 46761 + 143 = 46904
Step 329: 46904 + 143 = 47047
Step 330: 47047 + 143 = 47190
Step 331: 47190 + 143 = 47333
Step 332: 47333 + 143 = 47476
Step 333: 47476 + 143 = 47619
Step 334: 47619 + 143 = 47762
Step 335: 47762 + 143 = 47905
Step 336: 47905 + 143 = 48048
Step 337: 48048 + 143 = 48191
Step 338: 48191 + 143 = 48334
Step 339: 48334 + 143 = 48477
Step 340: 48477 + 143 = 48620
Step 341: 48620 + 143 = 48763
Step 342: 48763 + 143 = 48906
Step 343: 48906 + 143 = 49049
Step 344: 49049 + 143 = 49192
Step 345: 49192 + 143 = 49335
Step 346: 49335 + 143 = 49478
Step 347: 49478 + 143 = 49621
Step 348: 49621 + 143 = 49764
Step 349: 49764 + 143 = 49907
Step 350: 49907 + 143 = 50050
Step 351: 50050 + 143 = 50193
Step 352: 50193 + 143 = 50336
Step 353: 50336 + 143 = 50479
Step 354: 50479 + 143 = 50622
Step 355: 50622 + 143 = 50765
Step 356: 50765 + 143 = 50908
Step 357: 50908 + 143 = 51051

So, 143*357 = 51051