OK, let's work through this together. We're starting with 683 and we're going to multiply it by 105, which means we add 683 to itself 105 times.
Step 1: 0 + 683 = 683
Step 2: 683 + 683 = 1366
Step 3: 1366 + 683 = 2049
Step 4: 2049 + 683 = 2732
Step 5: 2732 + 683 = 3415
Step 6: 3415 + 683 = 4098
Step 7: 4098 + 683 = 4781
Step 8: 4781 + 683 = 5464
Step 9: 5464 + 683 = 6147
Step 10: 6147 + 683 = 6830
Step 11: 6830 + 683 = 7513
Step 12: 7513 + 683 = 8196
Step 13: 8196 + 683 = 8879
Step 14: 8879 + 683 = 9562
Step 15: 9562 + 683 = 10245
Step 16: 10245 + 683 = 10928
Step 17: 10928 + 683 = 11611
Step 18: 11611 + 683 = 12294
Step 19: 12294 + 683 = 12977
Step 20: 12977 + 683 = 13660
Step 21: 13660 + 683 = 14343
Step 22: 14343 + 683 = 15026
Step 23: 15026 + 683 = 15709
Step 24: 15709 + 683 = 16392
Step 25: 16392 + 683 = 17075
Step 26: 17075 + 683 = 17758
Step 27: 17758 + 683 = 18441
Step 28: 18441 + 683 = 19124
Step 29: 19124 + 683 = 19807
Step 30: 19807 + 683 = 20490
Step 31: 20490 + 683 = 21173
Step 32: 21173 + 683 = 21856
Step 33: 21856 + 683 = 22539
Step 34: 22539 + 683 = 23222
Step 35: 23222 + 683 = 23905
Step 36: 23905 + 683 = 24588
Step 37: 24588 + 683 = 25271
Step 38: 25271 + 683 = 25954
Step 39: 25954 + 683 = 26637
Step 40: 26637 + 683 = 27320
Step 41: 27320 + 683 = 28003
Step 42: 28003 + 683 = 28686
Step 43: 28686 + 683 = 29369
Step 44: 29369 + 683 = 30052
Step 45: 30052 + 683 = 30735
Step 46: 30735 + 683 = 31418
Step 47: 31418 + 683 = 32101
Step 48: 32101 + 683 = 32784
Step 49: 32784 + 683 = 33467
Step 50: 33467 + 683 = 34150
Step 51: 34150 + 683 = 34833
Step 52: 34833 + 683 = 35516
Step 53: 35516 + 683 = 36199
Step 54: 36199 + 683 = 36882
Step 55: 36882 + 683 = 37565
Step 56: 37565 + 683 = 38248
Step 57: 38248 + 683 = 38931
Step 58: 38931 + 683 = 39614
Step 59: 39614 + 683 = 40297
Step 60: 40297 + 683 = 40980
Step 61: 40980 + 683 = 41663
Step 62: 41663 + 683 = 42346
Step 63: 42346 + 683 = 43029
Step 64: 43029 + 683 = 43712
Step 65: 43712 + 683 = 44395
Step 66: 44395 + 683 = 45078
Step 67: 45078 + 683 = 45761
Step 68: 45761 + 683 = 46444
Step 69: 46444 + 683 = 47127
Step 70: 47127 + 683 = 47810
Step 71: 47810 + 683 = 48493
Step 72: 48493 + 683 = 49176
Step 73: 49176 + 683 = 49859
Step 74: 49859 + 683 = 50542
Step 75: 50542 + 683 = 51225
Step 76: 51225 + 683 = 51908
Step 77: 51908 + 683 = 52591
Step 78: 52591 + 683 = 53274
Step 79: 53274 + 683 = 53957
Step 80: 53957 + 683 = 54640
Step 81: 54640 + 683 = 55323
Step 82: 55323 + 683 = 56006
Step 83: 56006 + 683 = 56689
Step 84: 56689 + 683 = 57372
Step 85: 57372 + 683 = 58055
Step 86: 58055 + 683 = 58738
Step 87: 58738 + 683 = 59421
Step 88: 59421 + 683 = 60104
Step 89: 60104 + 683 = 60787
Step 90: 60787 + 683 = 61470
Step 91: 61470 + 683 = 62153
Step 92: 62153 + 683 = 62836
Step 93: 62836 + 683 = 63519
Step 94: 63519 + 683 = 64202
Step 95: 64202 + 683 = 64885
Step 96: 64885 + 683 = 65568
Step 97: 65568 + 683 = 66251
Step 98: 66251 + 683 = 66934
Step 99: 66934 + 683 = 67617
Step 100: 67617 + 683 = 68300
Step 101: 68300 + 683 = 68983
Step 102: 68983 + 683 = 69666
Step 103: 69666 + 683 = 70349
Step 104: 70349 + 683 = 71032
Step 105: 71032 + 683 = 71715

So, 683*105 = 71715