OK, let's work through this together. We're starting with 385 and we're going to multiply it by 86, which means we add 385 to itself 86 times.
Step 1: 0 + 385 = 385
Step 2: 385 + 385 = 770
Step 3: 770 + 385 = 1155
Step 4: 1155 + 385 = 1540
Step 5: 1540 + 385 = 1925
Step 6: 1925 + 385 = 2310
Step 7: 2310 + 385 = 2695
Step 8: 2695 + 385 = 3080
Step 9: 3080 + 385 = 3465
Step 10: 3465 + 385 = 3850
Step 11: 3850 + 385 = 4235
Step 12: 4235 + 385 = 4620
Step 13: 4620 + 385 = 5005
Step 14: 5005 + 385 = 5390
Step 15: 5390 + 385 = 5775
Step 16: 5775 + 385 = 6160
Step 17: 6160 + 385 = 6545
Step 18: 6545 + 385 = 6930
Step 19: 6930 + 385 = 7315
Step 20: 7315 + 385 = 7700
Step 21: 7700 + 385 = 8085
Step 22: 8085 + 385 = 8470
Step 23: 8470 + 385 = 8855
Step 24: 8855 + 385 = 9240
Step 25: 9240 + 385 = 9625
Step 26: 9625 + 385 = 10010
Step 27: 10010 + 385 = 10395
Step 28: 10395 + 385 = 10780
Step 29: 10780 + 385 = 11165
Step 30: 11165 + 385 = 11550
Step 31: 11550 + 385 = 11935
Step 32: 11935 + 385 = 12320
Step 33: 12320 + 385 = 12705
Step 34: 12705 + 385 = 13090
Step 35: 13090 + 385 = 13475
Step 36: 13475 + 385 = 13860
Step 37: 13860 + 385 = 14245
Step 38: 14245 + 385 = 14630
Step 39: 14630 + 385 = 15015
Step 40: 15015 + 385 = 15400
Step 41: 15400 + 385 = 15785
Step 42: 15785 + 385 = 16170
Step 43: 16170 + 385 = 16555
Step 44: 16555 + 385 = 16940
Step 45: 16940 + 385 = 17325
Step 46: 17325 + 385 = 17710
Step 47: 17710 + 385 = 18095
Step 48: 18095 + 385 = 18480
Step 49: 18480 + 385 = 18865
Step 50: 18865 + 385 = 19250
Step 51: 19250 + 385 = 19635
Step 52: 19635 + 385 = 20020
Step 53: 20020 + 385 = 20405
Step 54: 20405 + 385 = 20790
Step 55: 20790 + 385 = 21175
Step 56: 21175 + 385 = 21560
Step 57: 21560 + 385 = 21945
Step 58: 21945 + 385 = 22330
Step 59: 22330 + 385 = 22715
Step 60: 22715 + 385 = 23100
Step 61: 23100 + 385 = 23485
Step 62: 23485 + 385 = 23870
Step 63: 23870 + 385 = 24255
Step 64: 24255 + 385 = 24640
Step 65: 24640 + 385 = 25025
Step 66: 25025 + 385 = 25410
Step 67: 25410 + 385 = 25795
Step 68: 25795 + 385 = 26180
Step 69: 26180 + 385 = 26565
Step 70: 26565 + 385 = 26950
Step 71: 26950 + 385 = 27335
Step 72: 27335 + 385 = 27720
Step 73: 27720 + 385 = 28105
Step 74: 28105 + 385 = 28490
Step 75: 28490 + 385 = 28875
Step 76: 28875 + 385 = 29260
Step 77: 29260 + 385 = 29645
Step 78: 29645 + 385 = 30030
Step 79: 30030 + 385 = 30415
Step 80: 30415 + 385 = 30800
Step 81: 30800 + 385 = 31185
Step 82: 31185 + 385 = 31570
Step 83: 31570 + 385 = 31955
Step 84: 31955 + 385 = 32340
Step 85: 32340 + 385 = 32725
Step 86: 32725 + 385 = 33110

So, 385*86 = 33110