Sure thing! We've got 103 and we're gonna multiply it by 91. That's the same as adding 103 to itself 91 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

So, 103*91 = 9373