OK, let's work through this together. We're starting with 103 and we're going to multiply it by 357, which means we add 103 to itself 357 times.
Step 1: 0 + 103 = 103
Step 2: 103 + 103 = 206
Step 3: 206 + 103 = 309
Step 4: 309 + 103 = 412
Step 5: 412 + 103 = 515
Step 6: 515 + 103 = 618
Step 7: 618 + 103 = 721
Step 8: 721 + 103 = 824
Step 9: 824 + 103 = 927
Step 10: 927 + 103 = 1030
Step 11: 1030 + 103 = 1133
Step 12: 1133 + 103 = 1236
Step 13: 1236 + 103 = 1339
Step 14: 1339 + 103 = 1442
Step 15: 1442 + 103 = 1545
Step 16: 1545 + 103 = 1648
Step 17: 1648 + 103 = 1751
Step 18: 1751 + 103 = 1854
Step 19: 1854 + 103 = 1957
Step 20: 1957 + 103 = 2060
Step 21: 2060 + 103 = 2163
Step 22: 2163 + 103 = 2266
Step 23: 2266 + 103 = 2369
Step 24: 2369 + 103 = 2472
Step 25: 2472 + 103 = 2575
Step 26: 2575 + 103 = 2678
Step 27: 2678 + 103 = 2781
Step 28: 2781 + 103 = 2884
Step 29: 2884 + 103 = 2987
Step 30: 2987 + 103 = 3090
Step 31: 3090 + 103 = 3193
Step 32: 3193 + 103 = 3296
Step 33: 3296 + 103 = 3399
Step 34: 3399 + 103 = 3502
Step 35: 3502 + 103 = 3605
Step 36: 3605 + 103 = 3708
Step 37: 3708 + 103 = 3811
Step 38: 3811 + 103 = 3914
Step 39: 3914 + 103 = 4017
Step 40: 4017 + 103 = 4120
Step 41: 4120 + 103 = 4223
Step 42: 4223 + 103 = 4326
Step 43: 4326 + 103 = 4429
Step 44: 4429 + 103 = 4532
Step 45: 4532 + 103 = 4635
Step 46: 4635 + 103 = 4738
Step 47: 4738 + 103 = 4841
Step 48: 4841 + 103 = 4944
Step 49: 4944 + 103 = 5047
Step 50: 5047 + 103 = 5150
Step 51: 5150 + 103 = 5253
Step 52: 5253 + 103 = 5356
Step 53: 5356 + 103 = 5459
Step 54: 5459 + 103 = 5562
Step 55: 5562 + 103 = 5665
Step 56: 5665 + 103 = 5768
Step 57: 5768 + 103 = 5871
Step 58: 5871 + 103 = 5974
Step 59: 5974 + 103 = 6077
Step 60: 6077 + 103 = 6180
Step 61: 6180 + 103 = 6283
Step 62: 6283 + 103 = 6386
Step 63: 6386 + 103 = 6489
Step 64: 6489 + 103 = 6592
Step 65: 6592 + 103 = 6695
Step 66: 6695 + 103 = 6798
Step 67: 6798 + 103 = 6901
Step 68: 6901 + 103 = 7004
Step 69: 7004 + 103 = 7107
Step 70: 7107 + 103 = 7210
Step 71: 7210 + 103 = 7313
Step 72: 7313 + 103 = 7416
Step 73: 7416 + 103 = 7519
Step 74: 7519 + 103 = 7622
Step 75: 7622 + 103 = 7725
Step 76: 7725 + 103 = 7828
Step 77: 7828 + 103 = 7931
Step 78: 7931 + 103 = 8034
Step 79: 8034 + 103 = 8137
Step 80: 8137 + 103 = 8240
Step 81: 8240 + 103 = 8343
Step 82: 8343 + 103 = 8446
Step 83: 8446 + 103 = 8549
Step 84: 8549 + 103 = 8652
Step 85: 8652 + 103 = 8755
Step 86: 8755 + 103 = 8858
Step 87: 8858 + 103 = 8961
Step 88: 8961 + 103 = 9064
Step 89: 9064 + 103 = 9167
Step 90: 9167 + 103 = 9270
Step 91: 9270 + 103 = 9373
Step 92: 9373 + 103 = 9476
Step 93: 9476 + 103 = 9579
Step 94: 9579 + 103 = 9682
Step 95: 9682 + 103 = 9785
Step 96: 9785 + 103 = 9888
Step 97: 9888 + 103 = 9991
Step 98: 9991 + 103 = 10094
Step 99: 10094 + 103 = 10197
Step 100: 10197 + 103 = 10300
Step 101: 10300 + 103 = 10403
Step 102: 10403 + 103 = 10506
Step 103: 10506 + 103 = 10609
Step 104: 10609 + 103 = 10712
Step 105: 10712 + 103 = 10815
Step 106: 10815 + 103 = 10918
Step 107: 10918 + 103 = 11021
Step 108: 11021 + 103 = 11124
Step 109: 11124 + 103 = 11227
Step 110: 11227 + 103 = 11330
Step 111: 11330 + 103 = 11433
Step 112: 11433 + 103 = 11536
Step 113: 11536 + 103 = 11639
Step 114: 11639 + 103 = 11742
Step 115: 11742 + 103 = 11845
Step 116: 11845 + 103 = 11948
Step 117: 11948 + 103 = 12051
Step 118: 12051 + 103 = 12154
Step 119: 12154 + 103 = 12257
Step 120: 12257 + 103 = 12360
Step 121: 12360 + 103 = 12463
Step 122: 12463 + 103 = 12566
Step 123: 12566 + 103 = 12669
Step 124: 12669 + 103 = 12772
Step 125: 12772 + 103 = 12875
Step 126: 12875 + 103 = 12978
Step 127: 12978 + 103 = 13081
Step 128: 13081 + 103 = 13184
Step 129: 13184 + 103 = 13287
Step 130: 13287 + 103 = 13390
Step 131: 13390 + 103 = 13493
Step 132: 13493 + 103 = 13596
Step 133: 13596 + 103 = 13699
Step 134: 13699 + 103 = 13802
Step 135: 13802 + 103 = 13905
Step 136: 13905 + 103 = 14008
Step 137: 14008 + 103 = 14111
Step 138: 14111 + 103 = 14214
Step 139: 14214 + 103 = 14317
Step 140: 14317 + 103 = 14420
Step 141: 14420 + 103 = 14523
Step 142: 14523 + 103 = 14626
Step 143: 14626 + 103 = 14729
Step 144: 14729 + 103 = 14832
Step 145: 14832 + 103 = 14935
Step 146: 14935 + 103 = 15038
Step 147: 15038 + 103 = 15141
Step 148: 15141 + 103 = 15244
Step 149: 15244 + 103 = 15347
Step 150: 15347 + 103 = 15450
Step 151: 15450 + 103 = 15553
Step 152: 15553 + 103 = 15656
Step 153: 15656 + 103 = 15759
Step 154: 15759 + 103 = 15862
Step 155: 15862 + 103 = 15965
Step 156: 15965 + 103 = 16068
Step 157: 16068 + 103 = 16171
Step 158: 16171 + 103 = 16274
Step 159: 16274 + 103 = 16377
Step 160: 16377 + 103 = 16480
Step 161: 16480 + 103 = 16583
Step 162: 16583 + 103 = 16686
Step 163: 16686 + 103 = 16789
Step 164: 16789 + 103 = 16892
Step 165: 16892 + 103 = 16995
Step 166: 16995 + 103 = 17098
Step 167: 17098 + 103 = 17201
Step 168: 17201 + 103 = 17304
Step 169: 17304 + 103 = 17407
Step 170: 17407 + 103 = 17510
Step 171: 17510 + 103 = 17613
Step 172: 17613 + 103 = 17716
Step 173: 17716 + 103 = 17819
Step 174: 17819 + 103 = 17922
Step 175: 17922 + 103 = 18025
Step 176: 18025 + 103 = 18128
Step 177: 18128 + 103 = 18231
Step 178: 18231 + 103 = 18334
Step 179: 18334 + 103 = 18437
Step 180: 18437 + 103 = 18540
Step 181: 18540 + 103 = 18643
Step 182: 18643 + 103 = 18746
Step 183: 18746 + 103 = 18849
Step 184: 18849 + 103 = 18952
Step 185: 18952 + 103 = 19055
Step 186: 19055 + 103 = 19158
Step 187: 19158 + 103 = 19261
Step 188: 19261 + 103 = 19364
Step 189: 19364 + 103 = 19467
Step 190: 19467 + 103 = 19570
Step 191: 19570 + 103 = 19673
Step 192: 19673 + 103 = 19776
Step 193: 19776 + 103 = 19879
Step 194: 19879 + 103 = 19982
Step 195: 19982 + 103 = 20085
Step 196: 20085 + 103 = 20188
Step 197: 20188 + 103 = 20291
Step 198: 20291 + 103 = 20394
Step 199: 20394 + 103 = 20497
Step 200: 20497 + 103 = 20600
Step 201: 20600 + 103 = 20703
Step 202: 20703 + 103 = 20806
Step 203: 20806 + 103 = 20909
Step 204: 20909 + 103 = 21012
Step 205: 21012 + 103 = 21115
Step 206: 21115 + 103 = 21218
Step 207: 21218 + 103 = 21321
Step 208: 21321 + 103 = 21424
Step 209: 21424 + 103 = 21527
Step 210: 21527 + 103 = 21630
Step 211: 21630 + 103 = 21733
Step 212: 21733 + 103 = 21836
Step 213: 21836 + 103 = 21939
Step 214: 21939 + 103 = 22042
Step 215: 22042 + 103 = 22145
Step 216: 22145 + 103 = 22248
Step 217: 22248 + 103 = 22351
Step 218: 22351 + 103 = 22454
Step 219: 22454 + 103 = 22557
Step 220: 22557 + 103 = 22660
Step 221: 22660 + 103 = 22763
Step 222: 22763 + 103 = 22866
Step 223: 22866 + 103 = 22969
Step 224: 22969 + 103 = 23072
Step 225: 23072 + 103 = 23175
Step 226: 23175 + 103 = 23278
Step 227: 23278 + 103 = 23381
Step 228: 23381 + 103 = 23484
Step 229: 23484 + 103 = 23587
Step 230: 23587 + 103 = 23690
Step 231: 23690 + 103 = 23793
Step 232: 23793 + 103 = 23896
Step 233: 23896 + 103 = 23999
Step 234: 23999 + 103 = 24102
Step 235: 24102 + 103 = 24205
Step 236: 24205 + 103 = 24308
Step 237: 24308 + 103 = 24411
Step 238: 24411 + 103 = 24514
Step 239: 24514 + 103 = 24617
Step 240: 24617 + 103 = 24720
Step 241: 24720 + 103 = 24823
Step 242: 24823 + 103 = 24926
Step 243: 24926 + 103 = 25029
Step 244: 25029 + 103 = 25132
Step 245: 25132 + 103 = 25235
Step 246: 25235 + 103 = 25338
Step 247: 25338 + 103 = 25441
Step 248: 25441 + 103 = 25544
Step 249: 25544 + 103 = 25647
Step 250: 25647 + 103 = 25750
Step 251: 25750 + 103 = 25853
Step 252: 25853 + 103 = 25956
Step 253: 25956 + 103 = 26059
Step 254: 26059 + 103 = 26162
Step 255: 26162 + 103 = 26265
Step 256: 26265 + 103 = 26368
Step 257: 26368 + 103 = 26471
Step 258: 26471 + 103 = 26574
Step 259: 26574 + 103 = 26677
Step 260: 26677 + 103 = 26780
Step 261: 26780 + 103 = 26883
Step 262: 26883 + 103 = 26986
Step 263: 26986 + 103 = 27089
Step 264: 27089 + 103 = 27192
Step 265: 27192 + 103 = 27295
Step 266: 27295 + 103 = 27398
Step 267: 27398 + 103 = 27501
Step 268: 27501 + 103 = 27604
Step 269: 27604 + 103 = 27707
Step 270: 27707 + 103 = 27810
Step 271: 27810 + 103 = 27913
Step 272: 27913 + 103 = 28016
Step 273: 28016 + 103 = 28119
Step 274: 28119 + 103 = 28222
Step 275: 28222 + 103 = 28325
Step 276: 28325 + 103 = 28428
Step 277: 28428 + 103 = 28531
Step 278: 28531 + 103 = 28634
Step 279: 28634 + 103 = 28737
Step 280: 28737 + 103 = 28840
Step 281: 28840 + 103 = 28943
Step 282: 28943 + 103 = 29046
Step 283: 29046 + 103 = 29149
Step 284: 29149 + 103 = 29252
Step 285: 29252 + 103 = 29355
Step 286: 29355 + 103 = 29458
Step 287: 29458 + 103 = 29561
Step 288: 29561 + 103 = 29664
Step 289: 29664 + 103 = 29767
Step 290: 29767 + 103 = 29870
Step 291: 29870 + 103 = 29973
Step 292: 29973 + 103 = 30076
Step 293: 30076 + 103 = 30179
Step 294: 30179 + 103 = 30282
Step 295: 30282 + 103 = 30385
Step 296: 30385 + 103 = 30488
Step 297: 30488 + 103 = 30591
Step 298: 30591 + 103 = 30694
Step 299: 30694 + 103 = 30797
Step 300: 30797 + 103 = 30900
Step 301: 30900 + 103 = 31003
Step 302: 31003 + 103 = 31106
Step 303: 31106 + 103 = 31209
Step 304: 31209 + 103 = 31312
Step 305: 31312 + 103 = 31415
Step 306: 31415 + 103 = 31518
Step 307: 31518 + 103 = 31621
Step 308: 31621 + 103 = 31724
Step 309: 31724 + 103 = 31827
Step 310: 31827 + 103 = 31930
Step 311: 31930 + 103 = 32033
Step 312: 32033 + 103 = 32136
Step 313: 32136 + 103 = 32239
Step 314: 32239 + 103 = 32342
Step 315: 32342 + 103 = 32445
Step 316: 32445 + 103 = 32548
Step 317: 32548 + 103 = 32651
Step 318: 32651 + 103 = 32754
Step 319: 32754 + 103 = 32857
Step 320: 32857 + 103 = 32960
Step 321: 32960 + 103 = 33063
Step 322: 33063 + 103 = 33166
Step 323: 33166 + 103 = 33269
Step 324: 33269 + 103 = 33372
Step 325: 33372 + 103 = 33475
Step 326: 33475 + 103 = 33578
Step 327: 33578 + 103 = 33681
Step 328: 33681 + 103 = 33784
Step 329: 33784 + 103 = 33887
Step 330: 33887 + 103 = 33990
Step 331: 33990 + 103 = 34093
Step 332: 34093 + 103 = 34196
Step 333: 34196 + 103 = 34299
Step 334: 34299 + 103 = 34402
Step 335: 34402 + 103 = 34505
Step 336: 34505 + 103 = 34608
Step 337: 34608 + 103 = 34711
Step 338: 34711 + 103 = 34814
Step 339: 34814 + 103 = 34917
Step 340: 34917 + 103 = 35020
Step 341: 35020 + 103 = 35123
Step 342: 35123 + 103 = 35226
Step 343: 35226 + 103 = 35329
Step 344: 35329 + 103 = 35432
Step 345: 35432 + 103 = 35535
Step 346: 35535 + 103 = 35638
Step 347: 35638 + 103 = 35741
Step 348: 35741 + 103 = 35844
Step 349: 35844 + 103 = 35947
Step 350: 35947 + 103 = 36050
Step 351: 36050 + 103 = 36153
Step 352: 36153 + 103 = 36256
Step 353: 36256 + 103 = 36359
Step 354: 36359 + 103 = 36462
Step 355: 36462 + 103 = 36565
Step 356: 36565 + 103 = 36668
Step 357: 36668 + 103 = 36771

So, 103*357 = 36771