OK, let's crack this. We're given 819 and our task is to multiply it by 175. Essentially, we'll be adding 819 to itself 175 times.
Step 1: 0 + 819 = 819
Step 2: 819 + 819 = 1638
Step 3: 1638 + 819 = 2457
Step 4: 2457 + 819 = 3276
Step 5: 3276 + 819 = 4095
Step 6: 4095 + 819 = 4914
Step 7: 4914 + 819 = 5733
Step 8: 5733 + 819 = 6552
Step 9: 6552 + 819 = 7371
Step 10: 7371 + 819 = 8190
Step 11: 8190 + 819 = 9009
Step 12: 9009 + 819 = 9828
Step 13: 9828 + 819 = 10647
Step 14: 10647 + 819 = 11466
Step 15: 11466 + 819 = 12285
Step 16: 12285 + 819 = 13104
Step 17: 13104 + 819 = 13923
Step 18: 13923 + 819 = 14742
Step 19: 14742 + 819 = 15561
Step 20: 15561 + 819 = 16380
Step 21: 16380 + 819 = 17199
Step 22: 17199 + 819 = 18018
Step 23: 18018 + 819 = 18837
Step 24: 18837 + 819 = 19656
Step 25: 19656 + 819 = 20475
Step 26: 20475 + 819 = 21294
Step 27: 21294 + 819 = 22113
Step 28: 22113 + 819 = 22932
Step 29: 22932 + 819 = 23751
Step 30: 23751 + 819 = 24570
Step 31: 24570 + 819 = 25389
Step 32: 25389 + 819 = 26208
Step 33: 26208 + 819 = 27027
Step 34: 27027 + 819 = 27846
Step 35: 27846 + 819 = 28665
Step 36: 28665 + 819 = 29484
Step 37: 29484 + 819 = 30303
Step 38: 30303 + 819 = 31122
Step 39: 31122 + 819 = 31941
Step 40: 31941 + 819 = 32760
Step 41: 32760 + 819 = 33579
Step 42: 33579 + 819 = 34398
Step 43: 34398 + 819 = 35217
Step 44: 35217 + 819 = 36036
Step 45: 36036 + 819 = 36855
Step 46: 36855 + 819 = 37674
Step 47: 37674 + 819 = 38493
Step 48: 38493 + 819 = 39312
Step 49: 39312 + 819 = 40131
Step 50: 40131 + 819 = 40950
Step 51: 40950 + 819 = 41769
Step 52: 41769 + 819 = 42588
Step 53: 42588 + 819 = 43407
Step 54: 43407 + 819 = 44226
Step 55: 44226 + 819 = 45045
Step 56: 45045 + 819 = 45864
Step 57: 45864 + 819 = 46683
Step 58: 46683 + 819 = 47502
Step 59: 47502 + 819 = 48321
Step 60: 48321 + 819 = 49140
Step 61: 49140 + 819 = 49959
Step 62: 49959 + 819 = 50778
Step 63: 50778 + 819 = 51597
Step 64: 51597 + 819 = 52416
Step 65: 52416 + 819 = 53235
Step 66: 53235 + 819 = 54054
Step 67: 54054 + 819 = 54873
Step 68: 54873 + 819 = 55692
Step 69: 55692 + 819 = 56511
Step 70: 56511 + 819 = 57330
Step 71: 57330 + 819 = 58149
Step 72: 58149 + 819 = 58968
Step 73: 58968 + 819 = 59787
Step 74: 59787 + 819 = 60606
Step 75: 60606 + 819 = 61425
Step 76: 61425 + 819 = 62244
Step 77: 62244 + 819 = 63063
Step 78: 63063 + 819 = 63882
Step 79: 63882 + 819 = 64701
Step 80: 64701 + 819 = 65520
Step 81: 65520 + 819 = 66339
Step 82: 66339 + 819 = 67158
Step 83: 67158 + 819 = 67977
Step 84: 67977 + 819 = 68796
Step 85: 68796 + 819 = 69615
Step 86: 69615 + 819 = 70434
Step 87: 70434 + 819 = 71253
Step 88: 71253 + 819 = 72072
Step 89: 72072 + 819 = 72891
Step 90: 72891 + 819 = 73710
Step 91: 73710 + 819 = 74529
Step 92: 74529 + 819 = 75348
Step 93: 75348 + 819 = 76167
Step 94: 76167 + 819 = 76986
Step 95: 76986 + 819 = 77805
Step 96: 77805 + 819 = 78624
Step 97: 78624 + 819 = 79443
Step 98: 79443 + 819 = 80262
Step 99: 80262 + 819 = 81081
Step 100: 81081 + 819 = 81900
Step 101: 81900 + 819 = 82719
Step 102: 82719 + 819 = 83538
Step 103: 83538 + 819 = 84357
Step 104: 84357 + 819 = 85176
Step 105: 85176 + 819 = 85995
Step 106: 85995 + 819 = 86814
Step 107: 86814 + 819 = 87633
Step 108: 87633 + 819 = 88452
Step 109: 88452 + 819 = 89271
Step 110: 89271 + 819 = 90090
Step 111: 90090 + 819 = 90909
Step 112: 90909 + 819 = 91728
Step 113: 91728 + 819 = 92547
Step 114: 92547 + 819 = 93366
Step 115: 93366 + 819 = 94185
Step 116: 94185 + 819 = 95004
Step 117: 95004 + 819 = 95823
Step 118: 95823 + 819 = 96642
Step 119: 96642 + 819 = 97461
Step 120: 97461 + 819 = 98280
Step 121: 98280 + 819 = 99099
Step 122: 99099 + 819 = 99918
Step 123: 99918 + 819 = 100737
Step 124: 100737 + 819 = 101556
Step 125: 101556 + 819 = 102375
Step 126: 102375 + 819 = 103194
Step 127: 103194 + 819 = 104013
Step 128: 104013 + 819 = 104832
Step 129: 104832 + 819 = 105651
Step 130: 105651 + 819 = 106470
Step 131: 106470 + 819 = 107289
Step 132: 107289 + 819 = 108108
Step 133: 108108 + 819 = 108927
Step 134: 108927 + 819 = 109746
Step 135: 109746 + 819 = 110565
Step 136: 110565 + 819 = 111384
Step 137: 111384 + 819 = 112203
Step 138: 112203 + 819 = 113022
Step 139: 113022 + 819 = 113841
Step 140: 113841 + 819 = 114660
Step 141: 114660 + 819 = 115479
Step 142: 115479 + 819 = 116298
Step 143: 116298 + 819 = 117117
Step 144: 117117 + 819 = 117936
Step 145: 117936 + 819 = 118755
Step 146: 118755 + 819 = 119574
Step 147: 119574 + 819 = 120393
Step 148: 120393 + 819 = 121212
Step 149: 121212 + 819 = 122031
Step 150: 122031 + 819 = 122850
Step 151: 122850 + 819 = 123669
Step 152: 123669 + 819 = 124488
Step 153: 124488 + 819 = 125307
Step 154: 125307 + 819 = 126126
Step 155: 126126 + 819 = 126945
Step 156: 126945 + 819 = 127764
Step 157: 127764 + 819 = 128583
Step 158: 128583 + 819 = 129402
Step 159: 129402 + 819 = 130221
Step 160: 130221 + 819 = 131040
Step 161: 131040 + 819 = 131859
Step 162: 131859 + 819 = 132678
Step 163: 132678 + 819 = 133497
Step 164: 133497 + 819 = 134316
Step 165: 134316 + 819 = 135135
Step 166: 135135 + 819 = 135954
Step 167: 135954 + 819 = 136773
Step 168: 136773 + 819 = 137592
Step 169: 137592 + 819 = 138411
Step 170: 138411 + 819 = 139230
Step 171: 139230 + 819 = 140049
Step 172: 140049 + 819 = 140868
Step 173: 140868 + 819 = 141687
Step 174: 141687 + 819 = 142506
Step 175: 142506 + 819 = 143325

So, 819*175 = 143325