Sure thing, let's get straight to it. We start with 103 and we're going to multiply it by 51, which means adding 103 to itself 51 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

So, 103*51 = 5253