Let's roll up our sleeves and solve this. We have 107 and we're going to multiply it by 248, essentially adding 107 to itself 248 times.
Step 1: 0 + 107 = 107
Step 2: 107 + 107 = 214
Step 3: 214 + 107 = 321
Step 4: 321 + 107 = 428
Step 5: 428 + 107 = 535
Step 6: 535 + 107 = 642
Step 7: 642 + 107 = 749
Step 8: 749 + 107 = 856
Step 9: 856 + 107 = 963
Step 10: 963 + 107 = 1070
Step 11: 1070 + 107 = 1177
Step 12: 1177 + 107 = 1284
Step 13: 1284 + 107 = 1391
Step 14: 1391 + 107 = 1498
Step 15: 1498 + 107 = 1605
Step 16: 1605 + 107 = 1712
Step 17: 1712 + 107 = 1819
Step 18: 1819 + 107 = 1926
Step 19: 1926 + 107 = 2033
Step 20: 2033 + 107 = 2140
Step 21: 2140 + 107 = 2247
Step 22: 2247 + 107 = 2354
Step 23: 2354 + 107 = 2461
Step 24: 2461 + 107 = 2568
Step 25: 2568 + 107 = 2675
Step 26: 2675 + 107 = 2782
Step 27: 2782 + 107 = 2889
Step 28: 2889 + 107 = 2996
Step 29: 2996 + 107 = 3103
Step 30: 3103 + 107 = 3210
Step 31: 3210 + 107 = 3317
Step 32: 3317 + 107 = 3424
Step 33: 3424 + 107 = 3531
Step 34: 3531 + 107 = 3638
Step 35: 3638 + 107 = 3745
Step 36: 3745 + 107 = 3852
Step 37: 3852 + 107 = 3959
Step 38: 3959 + 107 = 4066
Step 39: 4066 + 107 = 4173
Step 40: 4173 + 107 = 4280
Step 41: 4280 + 107 = 4387
Step 42: 4387 + 107 = 4494
Step 43: 4494 + 107 = 4601
Step 44: 4601 + 107 = 4708
Step 45: 4708 + 107 = 4815
Step 46: 4815 + 107 = 4922
Step 47: 4922 + 107 = 5029
Step 48: 5029 + 107 = 5136
Step 49: 5136 + 107 = 5243
Step 50: 5243 + 107 = 5350
Step 51: 5350 + 107 = 5457
Step 52: 5457 + 107 = 5564
Step 53: 5564 + 107 = 5671
Step 54: 5671 + 107 = 5778
Step 55: 5778 + 107 = 5885
Step 56: 5885 + 107 = 5992
Step 57: 5992 + 107 = 6099
Step 58: 6099 + 107 = 6206
Step 59: 6206 + 107 = 6313
Step 60: 6313 + 107 = 6420
Step 61: 6420 + 107 = 6527
Step 62: 6527 + 107 = 6634
Step 63: 6634 + 107 = 6741
Step 64: 6741 + 107 = 6848
Step 65: 6848 + 107 = 6955
Step 66: 6955 + 107 = 7062
Step 67: 7062 + 107 = 7169
Step 68: 7169 + 107 = 7276
Step 69: 7276 + 107 = 7383
Step 70: 7383 + 107 = 7490
Step 71: 7490 + 107 = 7597
Step 72: 7597 + 107 = 7704
Step 73: 7704 + 107 = 7811
Step 74: 7811 + 107 = 7918
Step 75: 7918 + 107 = 8025
Step 76: 8025 + 107 = 8132
Step 77: 8132 + 107 = 8239
Step 78: 8239 + 107 = 8346
Step 79: 8346 + 107 = 8453
Step 80: 8453 + 107 = 8560
Step 81: 8560 + 107 = 8667
Step 82: 8667 + 107 = 8774
Step 83: 8774 + 107 = 8881
Step 84: 8881 + 107 = 8988
Step 85: 8988 + 107 = 9095
Step 86: 9095 + 107 = 9202
Step 87: 9202 + 107 = 9309
Step 88: 9309 + 107 = 9416
Step 89: 9416 + 107 = 9523
Step 90: 9523 + 107 = 9630
Step 91: 9630 + 107 = 9737
Step 92: 9737 + 107 = 9844
Step 93: 9844 + 107 = 9951
Step 94: 9951 + 107 = 10058
Step 95: 10058 + 107 = 10165
Step 96: 10165 + 107 = 10272
Step 97: 10272 + 107 = 10379
Step 98: 10379 + 107 = 10486
Step 99: 10486 + 107 = 10593
Step 100: 10593 + 107 = 10700
Step 101: 10700 + 107 = 10807
Step 102: 10807 + 107 = 10914
Step 103: 10914 + 107 = 11021
Step 104: 11021 + 107 = 11128
Step 105: 11128 + 107 = 11235
Step 106: 11235 + 107 = 11342
Step 107: 11342 + 107 = 11449
Step 108: 11449 + 107 = 11556
Step 109: 11556 + 107 = 11663
Step 110: 11663 + 107 = 11770
Step 111: 11770 + 107 = 11877
Step 112: 11877 + 107 = 11984
Step 113: 11984 + 107 = 12091
Step 114: 12091 + 107 = 12198
Step 115: 12198 + 107 = 12305
Step 116: 12305 + 107 = 12412
Step 117: 12412 + 107 = 12519
Step 118: 12519 + 107 = 12626
Step 119: 12626 + 107 = 12733
Step 120: 12733 + 107 = 12840
Step 121: 12840 + 107 = 12947
Step 122: 12947 + 107 = 13054
Step 123: 13054 + 107 = 13161
Step 124: 13161 + 107 = 13268
Step 125: 13268 + 107 = 13375
Step 126: 13375 + 107 = 13482
Step 127: 13482 + 107 = 13589
Step 128: 13589 + 107 = 13696
Step 129: 13696 + 107 = 13803
Step 130: 13803 + 107 = 13910
Step 131: 13910 + 107 = 14017
Step 132: 14017 + 107 = 14124
Step 133: 14124 + 107 = 14231
Step 134: 14231 + 107 = 14338
Step 135: 14338 + 107 = 14445
Step 136: 14445 + 107 = 14552
Step 137: 14552 + 107 = 14659
Step 138: 14659 + 107 = 14766
Step 139: 14766 + 107 = 14873
Step 140: 14873 + 107 = 14980
Step 141: 14980 + 107 = 15087
Step 142: 15087 + 107 = 15194
Step 143: 15194 + 107 = 15301
Step 144: 15301 + 107 = 15408
Step 145: 15408 + 107 = 15515
Step 146: 15515 + 107 = 15622
Step 147: 15622 + 107 = 15729
Step 148: 15729 + 107 = 15836
Step 149: 15836 + 107 = 15943
Step 150: 15943 + 107 = 16050
Step 151: 16050 + 107 = 16157
Step 152: 16157 + 107 = 16264
Step 153: 16264 + 107 = 16371
Step 154: 16371 + 107 = 16478
Step 155: 16478 + 107 = 16585
Step 156: 16585 + 107 = 16692
Step 157: 16692 + 107 = 16799
Step 158: 16799 + 107 = 16906
Step 159: 16906 + 107 = 17013
Step 160: 17013 + 107 = 17120
Step 161: 17120 + 107 = 17227
Step 162: 17227 + 107 = 17334
Step 163: 17334 + 107 = 17441
Step 164: 17441 + 107 = 17548
Step 165: 17548 + 107 = 17655
Step 166: 17655 + 107 = 17762
Step 167: 17762 + 107 = 17869
Step 168: 17869 + 107 = 17976
Step 169: 17976 + 107 = 18083
Step 170: 18083 + 107 = 18190
Step 171: 18190 + 107 = 18297
Step 172: 18297 + 107 = 18404
Step 173: 18404 + 107 = 18511
Step 174: 18511 + 107 = 18618
Step 175: 18618 + 107 = 18725
Step 176: 18725 + 107 = 18832
Step 177: 18832 + 107 = 18939
Step 178: 18939 + 107 = 19046
Step 179: 19046 + 107 = 19153
Step 180: 19153 + 107 = 19260
Step 181: 19260 + 107 = 19367
Step 182: 19367 + 107 = 19474
Step 183: 19474 + 107 = 19581
Step 184: 19581 + 107 = 19688
Step 185: 19688 + 107 = 19795
Step 186: 19795 + 107 = 19902
Step 187: 19902 + 107 = 20009
Step 188: 20009 + 107 = 20116
Step 189: 20116 + 107 = 20223
Step 190: 20223 + 107 = 20330
Step 191: 20330 + 107 = 20437
Step 192: 20437 + 107 = 20544
Step 193: 20544 + 107 = 20651
Step 194: 20651 + 107 = 20758
Step 195: 20758 + 107 = 20865
Step 196: 20865 + 107 = 20972
Step 197: 20972 + 107 = 21079
Step 198: 21079 + 107 = 21186
Step 199: 21186 + 107 = 21293
Step 200: 21293 + 107 = 21400
Step 201: 21400 + 107 = 21507
Step 202: 21507 + 107 = 21614
Step 203: 21614 + 107 = 21721
Step 204: 21721 + 107 = 21828
Step 205: 21828 + 107 = 21935
Step 206: 21935 + 107 = 22042
Step 207: 22042 + 107 = 22149
Step 208: 22149 + 107 = 22256
Step 209: 22256 + 107 = 22363
Step 210: 22363 + 107 = 22470
Step 211: 22470 + 107 = 22577
Step 212: 22577 + 107 = 22684
Step 213: 22684 + 107 = 22791
Step 214: 22791 + 107 = 22898
Step 215: 22898 + 107 = 23005
Step 216: 23005 + 107 = 23112
Step 217: 23112 + 107 = 23219
Step 218: 23219 + 107 = 23326
Step 219: 23326 + 107 = 23433
Step 220: 23433 + 107 = 23540
Step 221: 23540 + 107 = 23647
Step 222: 23647 + 107 = 23754
Step 223: 23754 + 107 = 23861
Step 224: 23861 + 107 = 23968
Step 225: 23968 + 107 = 24075
Step 226: 24075 + 107 = 24182
Step 227: 24182 + 107 = 24289
Step 228: 24289 + 107 = 24396
Step 229: 24396 + 107 = 24503
Step 230: 24503 + 107 = 24610
Step 231: 24610 + 107 = 24717
Step 232: 24717 + 107 = 24824
Step 233: 24824 + 107 = 24931
Step 234: 24931 + 107 = 25038
Step 235: 25038 + 107 = 25145
Step 236: 25145 + 107 = 25252
Step 237: 25252 + 107 = 25359
Step 238: 25359 + 107 = 25466
Step 239: 25466 + 107 = 25573
Step 240: 25573 + 107 = 25680
Step 241: 25680 + 107 = 25787
Step 242: 25787 + 107 = 25894
Step 243: 25894 + 107 = 26001
Step 244: 26001 + 107 = 26108
Step 245: 26108 + 107 = 26215
Step 246: 26215 + 107 = 26322
Step 247: 26322 + 107 = 26429
Step 248: 26429 + 107 = 26536

So, 107*248 = 26536