Let's get this math done. We have 813 and we're going to multiply it by 348. This is the same as taking 813 and adding it to itself 348 times.
Step 1: 0 + 813 = 813
Step 2: 813 + 813 = 1626
Step 3: 1626 + 813 = 2439
Step 4: 2439 + 813 = 3252
Step 5: 3252 + 813 = 4065
Step 6: 4065 + 813 = 4878
Step 7: 4878 + 813 = 5691
Step 8: 5691 + 813 = 6504
Step 9: 6504 + 813 = 7317
Step 10: 7317 + 813 = 8130
Step 11: 8130 + 813 = 8943
Step 12: 8943 + 813 = 9756
Step 13: 9756 + 813 = 10569
Step 14: 10569 + 813 = 11382
Step 15: 11382 + 813 = 12195
Step 16: 12195 + 813 = 13008
Step 17: 13008 + 813 = 13821
Step 18: 13821 + 813 = 14634
Step 19: 14634 + 813 = 15447
Step 20: 15447 + 813 = 16260
Step 21: 16260 + 813 = 17073
Step 22: 17073 + 813 = 17886
Step 23: 17886 + 813 = 18699
Step 24: 18699 + 813 = 19512
Step 25: 19512 + 813 = 20325
Step 26: 20325 + 813 = 21138
Step 27: 21138 + 813 = 21951
Step 28: 21951 + 813 = 22764
Step 29: 22764 + 813 = 23577
Step 30: 23577 + 813 = 24390
Step 31: 24390 + 813 = 25203
Step 32: 25203 + 813 = 26016
Step 33: 26016 + 813 = 26829
Step 34: 26829 + 813 = 27642
Step 35: 27642 + 813 = 28455
Step 36: 28455 + 813 = 29268
Step 37: 29268 + 813 = 30081
Step 38: 30081 + 813 = 30894
Step 39: 30894 + 813 = 31707
Step 40: 31707 + 813 = 32520
Step 41: 32520 + 813 = 33333
Step 42: 33333 + 813 = 34146
Step 43: 34146 + 813 = 34959
Step 44: 34959 + 813 = 35772
Step 45: 35772 + 813 = 36585
Step 46: 36585 + 813 = 37398
Step 47: 37398 + 813 = 38211
Step 48: 38211 + 813 = 39024
Step 49: 39024 + 813 = 39837
Step 50: 39837 + 813 = 40650
Step 51: 40650 + 813 = 41463
Step 52: 41463 + 813 = 42276
Step 53: 42276 + 813 = 43089
Step 54: 43089 + 813 = 43902
Step 55: 43902 + 813 = 44715
Step 56: 44715 + 813 = 45528
Step 57: 45528 + 813 = 46341
Step 58: 46341 + 813 = 47154
Step 59: 47154 + 813 = 47967
Step 60: 47967 + 813 = 48780
Step 61: 48780 + 813 = 49593
Step 62: 49593 + 813 = 50406
Step 63: 50406 + 813 = 51219
Step 64: 51219 + 813 = 52032
Step 65: 52032 + 813 = 52845
Step 66: 52845 + 813 = 53658
Step 67: 53658 + 813 = 54471
Step 68: 54471 + 813 = 55284
Step 69: 55284 + 813 = 56097
Step 70: 56097 + 813 = 56910
Step 71: 56910 + 813 = 57723
Step 72: 57723 + 813 = 58536
Step 73: 58536 + 813 = 59349
Step 74: 59349 + 813 = 60162
Step 75: 60162 + 813 = 60975
Step 76: 60975 + 813 = 61788
Step 77: 61788 + 813 = 62601
Step 78: 62601 + 813 = 63414
Step 79: 63414 + 813 = 64227
Step 80: 64227 + 813 = 65040
Step 81: 65040 + 813 = 65853
Step 82: 65853 + 813 = 66666
Step 83: 66666 + 813 = 67479
Step 84: 67479 + 813 = 68292
Step 85: 68292 + 813 = 69105
Step 86: 69105 + 813 = 69918
Step 87: 69918 + 813 = 70731
Step 88: 70731 + 813 = 71544
Step 89: 71544 + 813 = 72357
Step 90: 72357 + 813 = 73170
Step 91: 73170 + 813 = 73983
Step 92: 73983 + 813 = 74796
Step 93: 74796 + 813 = 75609
Step 94: 75609 + 813 = 76422
Step 95: 76422 + 813 = 77235
Step 96: 77235 + 813 = 78048
Step 97: 78048 + 813 = 78861
Step 98: 78861 + 813 = 79674
Step 99: 79674 + 813 = 80487
Step 100: 80487 + 813 = 81300
Step 101: 81300 + 813 = 82113
Step 102: 82113 + 813 = 82926
Step 103: 82926 + 813 = 83739
Step 104: 83739 + 813 = 84552
Step 105: 84552 + 813 = 85365
Step 106: 85365 + 813 = 86178
Step 107: 86178 + 813 = 86991
Step 108: 86991 + 813 = 87804
Step 109: 87804 + 813 = 88617
Step 110: 88617 + 813 = 89430
Step 111: 89430 + 813 = 90243
Step 112: 90243 + 813 = 91056
Step 113: 91056 + 813 = 91869
Step 114: 91869 + 813 = 92682
Step 115: 92682 + 813 = 93495
Step 116: 93495 + 813 = 94308
Step 117: 94308 + 813 = 95121
Step 118: 95121 + 813 = 95934
Step 119: 95934 + 813 = 96747
Step 120: 96747 + 813 = 97560
Step 121: 97560 + 813 = 98373
Step 122: 98373 + 813 = 99186
Step 123: 99186 + 813 = 99999
Step 124: 99999 + 813 = 100812
Step 125: 100812 + 813 = 101625
Step 126: 101625 + 813 = 102438
Step 127: 102438 + 813 = 103251
Step 128: 103251 + 813 = 104064
Step 129: 104064 + 813 = 104877
Step 130: 104877 + 813 = 105690
Step 131: 105690 + 813 = 106503
Step 132: 106503 + 813 = 107316
Step 133: 107316 + 813 = 108129
Step 134: 108129 + 813 = 108942
Step 135: 108942 + 813 = 109755
Step 136: 109755 + 813 = 110568
Step 137: 110568 + 813 = 111381
Step 138: 111381 + 813 = 112194
Step 139: 112194 + 813 = 113007
Step 140: 113007 + 813 = 113820
Step 141: 113820 + 813 = 114633
Step 142: 114633 + 813 = 115446
Step 143: 115446 + 813 = 116259
Step 144: 116259 + 813 = 117072
Step 145: 117072 + 813 = 117885
Step 146: 117885 + 813 = 118698
Step 147: 118698 + 813 = 119511
Step 148: 119511 + 813 = 120324
Step 149: 120324 + 813 = 121137
Step 150: 121137 + 813 = 121950
Step 151: 121950 + 813 = 122763
Step 152: 122763 + 813 = 123576
Step 153: 123576 + 813 = 124389
Step 154: 124389 + 813 = 125202
Step 155: 125202 + 813 = 126015
Step 156: 126015 + 813 = 126828
Step 157: 126828 + 813 = 127641
Step 158: 127641 + 813 = 128454
Step 159: 128454 + 813 = 129267
Step 160: 129267 + 813 = 130080
Step 161: 130080 + 813 = 130893
Step 162: 130893 + 813 = 131706
Step 163: 131706 + 813 = 132519
Step 164: 132519 + 813 = 133332
Step 165: 133332 + 813 = 134145
Step 166: 134145 + 813 = 134958
Step 167: 134958 + 813 = 135771
Step 168: 135771 + 813 = 136584
Step 169: 136584 + 813 = 137397
Step 170: 137397 + 813 = 138210
Step 171: 138210 + 813 = 139023
Step 172: 139023 + 813 = 139836
Step 173: 139836 + 813 = 140649
Step 174: 140649 + 813 = 141462
Step 175: 141462 + 813 = 142275
Step 176: 142275 + 813 = 143088
Step 177: 143088 + 813 = 143901
Step 178: 143901 + 813 = 144714
Step 179: 144714 + 813 = 145527
Step 180: 145527 + 813 = 146340
Step 181: 146340 + 813 = 147153
Step 182: 147153 + 813 = 147966
Step 183: 147966 + 813 = 148779
Step 184: 148779 + 813 = 149592
Step 185: 149592 + 813 = 150405
Step 186: 150405 + 813 = 151218
Step 187: 151218 + 813 = 152031
Step 188: 152031 + 813 = 152844
Step 189: 152844 + 813 = 153657
Step 190: 153657 + 813 = 154470
Step 191: 154470 + 813 = 155283
Step 192: 155283 + 813 = 156096
Step 193: 156096 + 813 = 156909
Step 194: 156909 + 813 = 157722
Step 195: 157722 + 813 = 158535
Step 196: 158535 + 813 = 159348
Step 197: 159348 + 813 = 160161
Step 198: 160161 + 813 = 160974
Step 199: 160974 + 813 = 161787
Step 200: 161787 + 813 = 162600
Step 201: 162600 + 813 = 163413
Step 202: 163413 + 813 = 164226
Step 203: 164226 + 813 = 165039
Step 204: 165039 + 813 = 165852
Step 205: 165852 + 813 = 166665
Step 206: 166665 + 813 = 167478
Step 207: 167478 + 813 = 168291
Step 208: 168291 + 813 = 169104
Step 209: 169104 + 813 = 169917
Step 210: 169917 + 813 = 170730
Step 211: 170730 + 813 = 171543
Step 212: 171543 + 813 = 172356
Step 213: 172356 + 813 = 173169
Step 214: 173169 + 813 = 173982
Step 215: 173982 + 813 = 174795
Step 216: 174795 + 813 = 175608
Step 217: 175608 + 813 = 176421
Step 218: 176421 + 813 = 177234
Step 219: 177234 + 813 = 178047
Step 220: 178047 + 813 = 178860
Step 221: 178860 + 813 = 179673
Step 222: 179673 + 813 = 180486
Step 223: 180486 + 813 = 181299
Step 224: 181299 + 813 = 182112
Step 225: 182112 + 813 = 182925
Step 226: 182925 + 813 = 183738
Step 227: 183738 + 813 = 184551
Step 228: 184551 + 813 = 185364
Step 229: 185364 + 813 = 186177
Step 230: 186177 + 813 = 186990
Step 231: 186990 + 813 = 187803
Step 232: 187803 + 813 = 188616
Step 233: 188616 + 813 = 189429
Step 234: 189429 + 813 = 190242
Step 235: 190242 + 813 = 191055
Step 236: 191055 + 813 = 191868
Step 237: 191868 + 813 = 192681
Step 238: 192681 + 813 = 193494
Step 239: 193494 + 813 = 194307
Step 240: 194307 + 813 = 195120
Step 241: 195120 + 813 = 195933
Step 242: 195933 + 813 = 196746
Step 243: 196746 + 813 = 197559
Step 244: 197559 + 813 = 198372
Step 245: 198372 + 813 = 199185
Step 246: 199185 + 813 = 199998
Step 247: 199998 + 813 = 200811
Step 248: 200811 + 813 = 201624
Step 249: 201624 + 813 = 202437
Step 250: 202437 + 813 = 203250
Step 251: 203250 + 813 = 204063
Step 252: 204063 + 813 = 204876
Step 253: 204876 + 813 = 205689
Step 254: 205689 + 813 = 206502
Step 255: 206502 + 813 = 207315
Step 256: 207315 + 813 = 208128
Step 257: 208128 + 813 = 208941
Step 258: 208941 + 813 = 209754
Step 259: 209754 + 813 = 210567
Step 260: 210567 + 813 = 211380
Step 261: 211380 + 813 = 212193
Step 262: 212193 + 813 = 213006
Step 263: 213006 + 813 = 213819
Step 264: 213819 + 813 = 214632
Step 265: 214632 + 813 = 215445
Step 266: 215445 + 813 = 216258
Step 267: 216258 + 813 = 217071
Step 268: 217071 + 813 = 217884
Step 269: 217884 + 813 = 218697
Step 270: 218697 + 813 = 219510
Step 271: 219510 + 813 = 220323
Step 272: 220323 + 813 = 221136
Step 273: 221136 + 813 = 221949
Step 274: 221949 + 813 = 222762
Step 275: 222762 + 813 = 223575
Step 276: 223575 + 813 = 224388
Step 277: 224388 + 813 = 225201
Step 278: 225201 + 813 = 226014
Step 279: 226014 + 813 = 226827
Step 280: 226827 + 813 = 227640
Step 281: 227640 + 813 = 228453
Step 282: 228453 + 813 = 229266
Step 283: 229266 + 813 = 230079
Step 284: 230079 + 813 = 230892
Step 285: 230892 + 813 = 231705
Step 286: 231705 + 813 = 232518
Step 287: 232518 + 813 = 233331
Step 288: 233331 + 813 = 234144
Step 289: 234144 + 813 = 234957
Step 290: 234957 + 813 = 235770
Step 291: 235770 + 813 = 236583
Step 292: 236583 + 813 = 237396
Step 293: 237396 + 813 = 238209
Step 294: 238209 + 813 = 239022
Step 295: 239022 + 813 = 239835
Step 296: 239835 + 813 = 240648
Step 297: 240648 + 813 = 241461
Step 298: 241461 + 813 = 242274
Step 299: 242274 + 813 = 243087
Step 300: 243087 + 813 = 243900
Step 301: 243900 + 813 = 244713
Step 302: 244713 + 813 = 245526
Step 303: 245526 + 813 = 246339
Step 304: 246339 + 813 = 247152
Step 305: 247152 + 813 = 247965
Step 306: 247965 + 813 = 248778
Step 307: 248778 + 813 = 249591
Step 308: 249591 + 813 = 250404
Step 309: 250404 + 813 = 251217
Step 310: 251217 + 813 = 252030
Step 311: 252030 + 813 = 252843
Step 312: 252843 + 813 = 253656
Step 313: 253656 + 813 = 254469
Step 314: 254469 + 813 = 255282
Step 315: 255282 + 813 = 256095
Step 316: 256095 + 813 = 256908
Step 317: 256908 + 813 = 257721
Step 318: 257721 + 813 = 258534
Step 319: 258534 + 813 = 259347
Step 320: 259347 + 813 = 260160
Step 321: 260160 + 813 = 260973
Step 322: 260973 + 813 = 261786
Step 323: 261786 + 813 = 262599
Step 324: 262599 + 813 = 263412
Step 325: 263412 + 813 = 264225
Step 326: 264225 + 813 = 265038
Step 327: 265038 + 813 = 265851
Step 328: 265851 + 813 = 266664
Step 329: 266664 + 813 = 267477
Step 330: 267477 + 813 = 268290
Step 331: 268290 + 813 = 269103
Step 332: 269103 + 813 = 269916
Step 333: 269916 + 813 = 270729
Step 334: 270729 + 813 = 271542
Step 335: 271542 + 813 = 272355
Step 336: 272355 + 813 = 273168
Step 337: 273168 + 813 = 273981
Step 338: 273981 + 813 = 274794
Step 339: 274794 + 813 = 275607
Step 340: 275607 + 813 = 276420
Step 341: 276420 + 813 = 277233
Step 342: 277233 + 813 = 278046
Step 343: 278046 + 813 = 278859
Step 344: 278859 + 813 = 279672
Step 345: 279672 + 813 = 280485
Step 346: 280485 + 813 = 281298
Step 347: 281298 + 813 = 282111
Step 348: 282111 + 813 = 282924

So, 813*348 = 282924