Without delay, let's solve this. We've got 46 and we will be multiplying it by 81, that is, adding 46 to itself 81 times.
Step 1: 0 + 46 = 46
Step 2: 46 + 46 = 92
Step 3: 92 + 46 = 138
Step 4: 138 + 46 = 184
Step 5: 184 + 46 = 230
Step 6: 230 + 46 = 276
Step 7: 276 + 46 = 322
Step 8: 322 + 46 = 368
Step 9: 368 + 46 = 414
Step 10: 414 + 46 = 460
Step 11: 460 + 46 = 506
Step 12: 506 + 46 = 552
Step 13: 552 + 46 = 598
Step 14: 598 + 46 = 644
Step 15: 644 + 46 = 690
Step 16: 690 + 46 = 736
Step 17: 736 + 46 = 782
Step 18: 782 + 46 = 828
Step 19: 828 + 46 = 874
Step 20: 874 + 46 = 920
Step 21: 920 + 46 = 966
Step 22: 966 + 46 = 1012
Step 23: 1012 + 46 = 1058
Step 24: 1058 + 46 = 1104
Step 25: 1104 + 46 = 1150
Step 26: 1150 + 46 = 1196
Step 27: 1196 + 46 = 1242
Step 28: 1242 + 46 = 1288
Step 29: 1288 + 46 = 1334
Step 30: 1334 + 46 = 1380
Step 31: 1380 + 46 = 1426
Step 32: 1426 + 46 = 1472
Step 33: 1472 + 46 = 1518
Step 34: 1518 + 46 = 1564
Step 35: 1564 + 46 = 1610
Step 36: 1610 + 46 = 1656
Step 37: 1656 + 46 = 1702
Step 38: 1702 + 46 = 1748
Step 39: 1748 + 46 = 1794
Step 40: 1794 + 46 = 1840
Step 41: 1840 + 46 = 1886
Step 42: 1886 + 46 = 1932
Step 43: 1932 + 46 = 1978
Step 44: 1978 + 46 = 2024
Step 45: 2024 + 46 = 2070
Step 46: 2070 + 46 = 2116
Step 47: 2116 + 46 = 2162
Step 48: 2162 + 46 = 2208
Step 49: 2208 + 46 = 2254
Step 50: 2254 + 46 = 2300
Step 51: 2300 + 46 = 2346
Step 52: 2346 + 46 = 2392
Step 53: 2392 + 46 = 2438
Step 54: 2438 + 46 = 2484
Step 55: 2484 + 46 = 2530
Step 56: 2530 + 46 = 2576
Step 57: 2576 + 46 = 2622
Step 58: 2622 + 46 = 2668
Step 59: 2668 + 46 = 2714
Step 60: 2714 + 46 = 2760
Step 61: 2760 + 46 = 2806
Step 62: 2806 + 46 = 2852
Step 63: 2852 + 46 = 2898
Step 64: 2898 + 46 = 2944
Step 65: 2944 + 46 = 2990
Step 66: 2990 + 46 = 3036
Step 67: 3036 + 46 = 3082
Step 68: 3082 + 46 = 3128
Step 69: 3128 + 46 = 3174
Step 70: 3174 + 46 = 3220
Step 71: 3220 + 46 = 3266
Step 72: 3266 + 46 = 3312
Step 73: 3312 + 46 = 3358
Step 74: 3358 + 46 = 3404
Step 75: 3404 + 46 = 3450
Step 76: 3450 + 46 = 3496
Step 77: 3496 + 46 = 3542
Step 78: 3542 + 46 = 3588
Step 79: 3588 + 46 = 3634
Step 80: 3634 + 46 = 3680
Step 81: 3680 + 46 = 3726

So, 46*81 = 3726