Alright, let's solve this math problem step by step. First, we have the number 43. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 105. So, we're going to take the number 43 and add it to itself 105 times.
Step 1: 0 + 43 = 43
Step 2: 43 + 43 = 86
Step 3: 86 + 43 = 129
Step 4: 129 + 43 = 172
Step 5: 172 + 43 = 215
Step 6: 215 + 43 = 258
Step 7: 258 + 43 = 301
Step 8: 301 + 43 = 344
Step 9: 344 + 43 = 387
Step 10: 387 + 43 = 430
Step 11: 430 + 43 = 473
Step 12: 473 + 43 = 516
Step 13: 516 + 43 = 559
Step 14: 559 + 43 = 602
Step 15: 602 + 43 = 645
Step 16: 645 + 43 = 688
Step 17: 688 + 43 = 731
Step 18: 731 + 43 = 774
Step 19: 774 + 43 = 817
Step 20: 817 + 43 = 860
Step 21: 860 + 43 = 903
Step 22: 903 + 43 = 946
Step 23: 946 + 43 = 989
Step 24: 989 + 43 = 1032
Step 25: 1032 + 43 = 1075
Step 26: 1075 + 43 = 1118
Step 27: 1118 + 43 = 1161
Step 28: 1161 + 43 = 1204
Step 29: 1204 + 43 = 1247
Step 30: 1247 + 43 = 1290
Step 31: 1290 + 43 = 1333
Step 32: 1333 + 43 = 1376
Step 33: 1376 + 43 = 1419
Step 34: 1419 + 43 = 1462
Step 35: 1462 + 43 = 1505
Step 36: 1505 + 43 = 1548
Step 37: 1548 + 43 = 1591
Step 38: 1591 + 43 = 1634
Step 39: 1634 + 43 = 1677
Step 40: 1677 + 43 = 1720
Step 41: 1720 + 43 = 1763
Step 42: 1763 + 43 = 1806
Step 43: 1806 + 43 = 1849
Step 44: 1849 + 43 = 1892
Step 45: 1892 + 43 = 1935
Step 46: 1935 + 43 = 1978
Step 47: 1978 + 43 = 2021
Step 48: 2021 + 43 = 2064
Step 49: 2064 + 43 = 2107
Step 50: 2107 + 43 = 2150
Step 51: 2150 + 43 = 2193
Step 52: 2193 + 43 = 2236
Step 53: 2236 + 43 = 2279
Step 54: 2279 + 43 = 2322
Step 55: 2322 + 43 = 2365
Step 56: 2365 + 43 = 2408
Step 57: 2408 + 43 = 2451
Step 58: 2451 + 43 = 2494
Step 59: 2494 + 43 = 2537
Step 60: 2537 + 43 = 2580
Step 61: 2580 + 43 = 2623
Step 62: 2623 + 43 = 2666
Step 63: 2666 + 43 = 2709
Step 64: 2709 + 43 = 2752
Step 65: 2752 + 43 = 2795
Step 66: 2795 + 43 = 2838
Step 67: 2838 + 43 = 2881
Step 68: 2881 + 43 = 2924
Step 69: 2924 + 43 = 2967
Step 70: 2967 + 43 = 3010
Step 71: 3010 + 43 = 3053
Step 72: 3053 + 43 = 3096
Step 73: 3096 + 43 = 3139
Step 74: 3139 + 43 = 3182
Step 75: 3182 + 43 = 3225
Step 76: 3225 + 43 = 3268
Step 77: 3268 + 43 = 3311
Step 78: 3311 + 43 = 3354
Step 79: 3354 + 43 = 3397
Step 80: 3397 + 43 = 3440
Step 81: 3440 + 43 = 3483
Step 82: 3483 + 43 = 3526
Step 83: 3526 + 43 = 3569
Step 84: 3569 + 43 = 3612
Step 85: 3612 + 43 = 3655
Step 86: 3655 + 43 = 3698
Step 87: 3698 + 43 = 3741
Step 88: 3741 + 43 = 3784
Step 89: 3784 + 43 = 3827
Step 90: 3827 + 43 = 3870
Step 91: 3870 + 43 = 3913
Step 92: 3913 + 43 = 3956
Step 93: 3956 + 43 = 3999
Step 94: 3999 + 43 = 4042
Step 95: 4042 + 43 = 4085
Step 96: 4085 + 43 = 4128
Step 97: 4128 + 43 = 4171
Step 98: 4171 + 43 = 4214
Step 99: 4214 + 43 = 4257
Step 100: 4257 + 43 = 4300
Step 101: 4300 + 43 = 4343
Step 102: 4343 + 43 = 4386
Step 103: 4386 + 43 = 4429
Step 104: 4429 + 43 = 4472
Step 105: 4472 + 43 = 4515

So, 43*105 = 4515