Let's roll up our sleeves and solve this. We have 379 and we're going to multiply it by 86, essentially adding 379 to itself 86 times.
Step 1: 0 + 379 = 379
Step 2: 379 + 379 = 758
Step 3: 758 + 379 = 1137
Step 4: 1137 + 379 = 1516
Step 5: 1516 + 379 = 1895
Step 6: 1895 + 379 = 2274
Step 7: 2274 + 379 = 2653
Step 8: 2653 + 379 = 3032
Step 9: 3032 + 379 = 3411
Step 10: 3411 + 379 = 3790
Step 11: 3790 + 379 = 4169
Step 12: 4169 + 379 = 4548
Step 13: 4548 + 379 = 4927
Step 14: 4927 + 379 = 5306
Step 15: 5306 + 379 = 5685
Step 16: 5685 + 379 = 6064
Step 17: 6064 + 379 = 6443
Step 18: 6443 + 379 = 6822
Step 19: 6822 + 379 = 7201
Step 20: 7201 + 379 = 7580
Step 21: 7580 + 379 = 7959
Step 22: 7959 + 379 = 8338
Step 23: 8338 + 379 = 8717
Step 24: 8717 + 379 = 9096
Step 25: 9096 + 379 = 9475
Step 26: 9475 + 379 = 9854
Step 27: 9854 + 379 = 10233
Step 28: 10233 + 379 = 10612
Step 29: 10612 + 379 = 10991
Step 30: 10991 + 379 = 11370
Step 31: 11370 + 379 = 11749
Step 32: 11749 + 379 = 12128
Step 33: 12128 + 379 = 12507
Step 34: 12507 + 379 = 12886
Step 35: 12886 + 379 = 13265
Step 36: 13265 + 379 = 13644
Step 37: 13644 + 379 = 14023
Step 38: 14023 + 379 = 14402
Step 39: 14402 + 379 = 14781
Step 40: 14781 + 379 = 15160
Step 41: 15160 + 379 = 15539
Step 42: 15539 + 379 = 15918
Step 43: 15918 + 379 = 16297
Step 44: 16297 + 379 = 16676
Step 45: 16676 + 379 = 17055
Step 46: 17055 + 379 = 17434
Step 47: 17434 + 379 = 17813
Step 48: 17813 + 379 = 18192
Step 49: 18192 + 379 = 18571
Step 50: 18571 + 379 = 18950
Step 51: 18950 + 379 = 19329
Step 52: 19329 + 379 = 19708
Step 53: 19708 + 379 = 20087
Step 54: 20087 + 379 = 20466
Step 55: 20466 + 379 = 20845
Step 56: 20845 + 379 = 21224
Step 57: 21224 + 379 = 21603
Step 58: 21603 + 379 = 21982
Step 59: 21982 + 379 = 22361
Step 60: 22361 + 379 = 22740
Step 61: 22740 + 379 = 23119
Step 62: 23119 + 379 = 23498
Step 63: 23498 + 379 = 23877
Step 64: 23877 + 379 = 24256
Step 65: 24256 + 379 = 24635
Step 66: 24635 + 379 = 25014
Step 67: 25014 + 379 = 25393
Step 68: 25393 + 379 = 25772
Step 69: 25772 + 379 = 26151
Step 70: 26151 + 379 = 26530
Step 71: 26530 + 379 = 26909
Step 72: 26909 + 379 = 27288
Step 73: 27288 + 379 = 27667
Step 74: 27667 + 379 = 28046
Step 75: 28046 + 379 = 28425
Step 76: 28425 + 379 = 28804
Step 77: 28804 + 379 = 29183
Step 78: 29183 + 379 = 29562
Step 79: 29562 + 379 = 29941
Step 80: 29941 + 379 = 30320
Step 81: 30320 + 379 = 30699
Step 82: 30699 + 379 = 31078
Step 83: 31078 + 379 = 31457
Step 84: 31457 + 379 = 31836
Step 85: 31836 + 379 = 32215
Step 86: 32215 + 379 = 32594

So, 379*86 = 32594