OK, let's work through this together. We're starting with 837 and we're going to multiply it by 385, which means we add 837 to itself 385 times.
Step 1: 0 + 837 = 837
Step 2: 837 + 837 = 1674
Step 3: 1674 + 837 = 2511
Step 4: 2511 + 837 = 3348
Step 5: 3348 + 837 = 4185
Step 6: 4185 + 837 = 5022
Step 7: 5022 + 837 = 5859
Step 8: 5859 + 837 = 6696
Step 9: 6696 + 837 = 7533
Step 10: 7533 + 837 = 8370
Step 11: 8370 + 837 = 9207
Step 12: 9207 + 837 = 10044
Step 13: 10044 + 837 = 10881
Step 14: 10881 + 837 = 11718
Step 15: 11718 + 837 = 12555
Step 16: 12555 + 837 = 13392
Step 17: 13392 + 837 = 14229
Step 18: 14229 + 837 = 15066
Step 19: 15066 + 837 = 15903
Step 20: 15903 + 837 = 16740
Step 21: 16740 + 837 = 17577
Step 22: 17577 + 837 = 18414
Step 23: 18414 + 837 = 19251
Step 24: 19251 + 837 = 20088
Step 25: 20088 + 837 = 20925
Step 26: 20925 + 837 = 21762
Step 27: 21762 + 837 = 22599
Step 28: 22599 + 837 = 23436
Step 29: 23436 + 837 = 24273
Step 30: 24273 + 837 = 25110
Step 31: 25110 + 837 = 25947
Step 32: 25947 + 837 = 26784
Step 33: 26784 + 837 = 27621
Step 34: 27621 + 837 = 28458
Step 35: 28458 + 837 = 29295
Step 36: 29295 + 837 = 30132
Step 37: 30132 + 837 = 30969
Step 38: 30969 + 837 = 31806
Step 39: 31806 + 837 = 32643
Step 40: 32643 + 837 = 33480
Step 41: 33480 + 837 = 34317
Step 42: 34317 + 837 = 35154
Step 43: 35154 + 837 = 35991
Step 44: 35991 + 837 = 36828
Step 45: 36828 + 837 = 37665
Step 46: 37665 + 837 = 38502
Step 47: 38502 + 837 = 39339
Step 48: 39339 + 837 = 40176
Step 49: 40176 + 837 = 41013
Step 50: 41013 + 837 = 41850
Step 51: 41850 + 837 = 42687
Step 52: 42687 + 837 = 43524
Step 53: 43524 + 837 = 44361
Step 54: 44361 + 837 = 45198
Step 55: 45198 + 837 = 46035
Step 56: 46035 + 837 = 46872
Step 57: 46872 + 837 = 47709
Step 58: 47709 + 837 = 48546
Step 59: 48546 + 837 = 49383
Step 60: 49383 + 837 = 50220
Step 61: 50220 + 837 = 51057
Step 62: 51057 + 837 = 51894
Step 63: 51894 + 837 = 52731
Step 64: 52731 + 837 = 53568
Step 65: 53568 + 837 = 54405
Step 66: 54405 + 837 = 55242
Step 67: 55242 + 837 = 56079
Step 68: 56079 + 837 = 56916
Step 69: 56916 + 837 = 57753
Step 70: 57753 + 837 = 58590
Step 71: 58590 + 837 = 59427
Step 72: 59427 + 837 = 60264
Step 73: 60264 + 837 = 61101
Step 74: 61101 + 837 = 61938
Step 75: 61938 + 837 = 62775
Step 76: 62775 + 837 = 63612
Step 77: 63612 + 837 = 64449
Step 78: 64449 + 837 = 65286
Step 79: 65286 + 837 = 66123
Step 80: 66123 + 837 = 66960
Step 81: 66960 + 837 = 67797
Step 82: 67797 + 837 = 68634
Step 83: 68634 + 837 = 69471
Step 84: 69471 + 837 = 70308
Step 85: 70308 + 837 = 71145
Step 86: 71145 + 837 = 71982
Step 87: 71982 + 837 = 72819
Step 88: 72819 + 837 = 73656
Step 89: 73656 + 837 = 74493
Step 90: 74493 + 837 = 75330
Step 91: 75330 + 837 = 76167
Step 92: 76167 + 837 = 77004
Step 93: 77004 + 837 = 77841
Step 94: 77841 + 837 = 78678
Step 95: 78678 + 837 = 79515
Step 96: 79515 + 837 = 80352
Step 97: 80352 + 837 = 81189
Step 98: 81189 + 837 = 82026
Step 99: 82026 + 837 = 82863
Step 100: 82863 + 837 = 83700
Step 101: 83700 + 837 = 84537
Step 102: 84537 + 837 = 85374
Step 103: 85374 + 837 = 86211
Step 104: 86211 + 837 = 87048
Step 105: 87048 + 837 = 87885
Step 106: 87885 + 837 = 88722
Step 107: 88722 + 837 = 89559
Step 108: 89559 + 837 = 90396
Step 109: 90396 + 837 = 91233
Step 110: 91233 + 837 = 92070
Step 111: 92070 + 837 = 92907
Step 112: 92907 + 837 = 93744
Step 113: 93744 + 837 = 94581
Step 114: 94581 + 837 = 95418
Step 115: 95418 + 837 = 96255
Step 116: 96255 + 837 = 97092
Step 117: 97092 + 837 = 97929
Step 118: 97929 + 837 = 98766
Step 119: 98766 + 837 = 99603
Step 120: 99603 + 837 = 100440
Step 121: 100440 + 837 = 101277
Step 122: 101277 + 837 = 102114
Step 123: 102114 + 837 = 102951
Step 124: 102951 + 837 = 103788
Step 125: 103788 + 837 = 104625
Step 126: 104625 + 837 = 105462
Step 127: 105462 + 837 = 106299
Step 128: 106299 + 837 = 107136
Step 129: 107136 + 837 = 107973
Step 130: 107973 + 837 = 108810
Step 131: 108810 + 837 = 109647
Step 132: 109647 + 837 = 110484
Step 133: 110484 + 837 = 111321
Step 134: 111321 + 837 = 112158
Step 135: 112158 + 837 = 112995
Step 136: 112995 + 837 = 113832
Step 137: 113832 + 837 = 114669
Step 138: 114669 + 837 = 115506
Step 139: 115506 + 837 = 116343
Step 140: 116343 + 837 = 117180
Step 141: 117180 + 837 = 118017
Step 142: 118017 + 837 = 118854
Step 143: 118854 + 837 = 119691
Step 144: 119691 + 837 = 120528
Step 145: 120528 + 837 = 121365
Step 146: 121365 + 837 = 122202
Step 147: 122202 + 837 = 123039
Step 148: 123039 + 837 = 123876
Step 149: 123876 + 837 = 124713
Step 150: 124713 + 837 = 125550
Step 151: 125550 + 837 = 126387
Step 152: 126387 + 837 = 127224
Step 153: 127224 + 837 = 128061
Step 154: 128061 + 837 = 128898
Step 155: 128898 + 837 = 129735
Step 156: 129735 + 837 = 130572
Step 157: 130572 + 837 = 131409
Step 158: 131409 + 837 = 132246
Step 159: 132246 + 837 = 133083
Step 160: 133083 + 837 = 133920
Step 161: 133920 + 837 = 134757
Step 162: 134757 + 837 = 135594
Step 163: 135594 + 837 = 136431
Step 164: 136431 + 837 = 137268
Step 165: 137268 + 837 = 138105
Step 166: 138105 + 837 = 138942
Step 167: 138942 + 837 = 139779
Step 168: 139779 + 837 = 140616
Step 169: 140616 + 837 = 141453
Step 170: 141453 + 837 = 142290
Step 171: 142290 + 837 = 143127
Step 172: 143127 + 837 = 143964
Step 173: 143964 + 837 = 144801
Step 174: 144801 + 837 = 145638
Step 175: 145638 + 837 = 146475
Step 176: 146475 + 837 = 147312
Step 177: 147312 + 837 = 148149
Step 178: 148149 + 837 = 148986
Step 179: 148986 + 837 = 149823
Step 180: 149823 + 837 = 150660
Step 181: 150660 + 837 = 151497
Step 182: 151497 + 837 = 152334
Step 183: 152334 + 837 = 153171
Step 184: 153171 + 837 = 154008
Step 185: 154008 + 837 = 154845
Step 186: 154845 + 837 = 155682
Step 187: 155682 + 837 = 156519
Step 188: 156519 + 837 = 157356
Step 189: 157356 + 837 = 158193
Step 190: 158193 + 837 = 159030
Step 191: 159030 + 837 = 159867
Step 192: 159867 + 837 = 160704
Step 193: 160704 + 837 = 161541
Step 194: 161541 + 837 = 162378
Step 195: 162378 + 837 = 163215
Step 196: 163215 + 837 = 164052
Step 197: 164052 + 837 = 164889
Step 198: 164889 + 837 = 165726
Step 199: 165726 + 837 = 166563
Step 200: 166563 + 837 = 167400
Step 201: 167400 + 837 = 168237
Step 202: 168237 + 837 = 169074
Step 203: 169074 + 837 = 169911
Step 204: 169911 + 837 = 170748
Step 205: 170748 + 837 = 171585
Step 206: 171585 + 837 = 172422
Step 207: 172422 + 837 = 173259
Step 208: 173259 + 837 = 174096
Step 209: 174096 + 837 = 174933
Step 210: 174933 + 837 = 175770
Step 211: 175770 + 837 = 176607
Step 212: 176607 + 837 = 177444
Step 213: 177444 + 837 = 178281
Step 214: 178281 + 837 = 179118
Step 215: 179118 + 837 = 179955
Step 216: 179955 + 837 = 180792
Step 217: 180792 + 837 = 181629
Step 218: 181629 + 837 = 182466
Step 219: 182466 + 837 = 183303
Step 220: 183303 + 837 = 184140
Step 221: 184140 + 837 = 184977
Step 222: 184977 + 837 = 185814
Step 223: 185814 + 837 = 186651
Step 224: 186651 + 837 = 187488
Step 225: 187488 + 837 = 188325
Step 226: 188325 + 837 = 189162
Step 227: 189162 + 837 = 189999
Step 228: 189999 + 837 = 190836
Step 229: 190836 + 837 = 191673
Step 230: 191673 + 837 = 192510
Step 231: 192510 + 837 = 193347
Step 232: 193347 + 837 = 194184
Step 233: 194184 + 837 = 195021
Step 234: 195021 + 837 = 195858
Step 235: 195858 + 837 = 196695
Step 236: 196695 + 837 = 197532
Step 237: 197532 + 837 = 198369
Step 238: 198369 + 837 = 199206
Step 239: 199206 + 837 = 200043
Step 240: 200043 + 837 = 200880
Step 241: 200880 + 837 = 201717
Step 242: 201717 + 837 = 202554
Step 243: 202554 + 837 = 203391
Step 244: 203391 + 837 = 204228
Step 245: 204228 + 837 = 205065
Step 246: 205065 + 837 = 205902
Step 247: 205902 + 837 = 206739
Step 248: 206739 + 837 = 207576
Step 249: 207576 + 837 = 208413
Step 250: 208413 + 837 = 209250
Step 251: 209250 + 837 = 210087
Step 252: 210087 + 837 = 210924
Step 253: 210924 + 837 = 211761
Step 254: 211761 + 837 = 212598
Step 255: 212598 + 837 = 213435
Step 256: 213435 + 837 = 214272
Step 257: 214272 + 837 = 215109
Step 258: 215109 + 837 = 215946
Step 259: 215946 + 837 = 216783
Step 260: 216783 + 837 = 217620
Step 261: 217620 + 837 = 218457
Step 262: 218457 + 837 = 219294
Step 263: 219294 + 837 = 220131
Step 264: 220131 + 837 = 220968
Step 265: 220968 + 837 = 221805
Step 266: 221805 + 837 = 222642
Step 267: 222642 + 837 = 223479
Step 268: 223479 + 837 = 224316
Step 269: 224316 + 837 = 225153
Step 270: 225153 + 837 = 225990
Step 271: 225990 + 837 = 226827
Step 272: 226827 + 837 = 227664
Step 273: 227664 + 837 = 228501
Step 274: 228501 + 837 = 229338
Step 275: 229338 + 837 = 230175
Step 276: 230175 + 837 = 231012
Step 277: 231012 + 837 = 231849
Step 278: 231849 + 837 = 232686
Step 279: 232686 + 837 = 233523
Step 280: 233523 + 837 = 234360
Step 281: 234360 + 837 = 235197
Step 282: 235197 + 837 = 236034
Step 283: 236034 + 837 = 236871
Step 284: 236871 + 837 = 237708
Step 285: 237708 + 837 = 238545
Step 286: 238545 + 837 = 239382
Step 287: 239382 + 837 = 240219
Step 288: 240219 + 837 = 241056
Step 289: 241056 + 837 = 241893
Step 290: 241893 + 837 = 242730
Step 291: 242730 + 837 = 243567
Step 292: 243567 + 837 = 244404
Step 293: 244404 + 837 = 245241
Step 294: 245241 + 837 = 246078
Step 295: 246078 + 837 = 246915
Step 296: 246915 + 837 = 247752
Step 297: 247752 + 837 = 248589
Step 298: 248589 + 837 = 249426
Step 299: 249426 + 837 = 250263
Step 300: 250263 + 837 = 251100
Step 301: 251100 + 837 = 251937
Step 302: 251937 + 837 = 252774
Step 303: 252774 + 837 = 253611
Step 304: 253611 + 837 = 254448
Step 305: 254448 + 837 = 255285
Step 306: 255285 + 837 = 256122
Step 307: 256122 + 837 = 256959
Step 308: 256959 + 837 = 257796
Step 309: 257796 + 837 = 258633
Step 310: 258633 + 837 = 259470
Step 311: 259470 + 837 = 260307
Step 312: 260307 + 837 = 261144
Step 313: 261144 + 837 = 261981
Step 314: 261981 + 837 = 262818
Step 315: 262818 + 837 = 263655
Step 316: 263655 + 837 = 264492
Step 317: 264492 + 837 = 265329
Step 318: 265329 + 837 = 266166
Step 319: 266166 + 837 = 267003
Step 320: 267003 + 837 = 267840
Step 321: 267840 + 837 = 268677
Step 322: 268677 + 837 = 269514
Step 323: 269514 + 837 = 270351
Step 324: 270351 + 837 = 271188
Step 325: 271188 + 837 = 272025
Step 326: 272025 + 837 = 272862
Step 327: 272862 + 837 = 273699
Step 328: 273699 + 837 = 274536
Step 329: 274536 + 837 = 275373
Step 330: 275373 + 837 = 276210
Step 331: 276210 + 837 = 277047
Step 332: 277047 + 837 = 277884
Step 333: 277884 + 837 = 278721
Step 334: 278721 + 837 = 279558
Step 335: 279558 + 837 = 280395
Step 336: 280395 + 837 = 281232
Step 337: 281232 + 837 = 282069
Step 338: 282069 + 837 = 282906
Step 339: 282906 + 837 = 283743
Step 340: 283743 + 837 = 284580
Step 341: 284580 + 837 = 285417
Step 342: 285417 + 837 = 286254
Step 343: 286254 + 837 = 287091
Step 344: 287091 + 837 = 287928
Step 345: 287928 + 837 = 288765
Step 346: 288765 + 837 = 289602
Step 347: 289602 + 837 = 290439
Step 348: 290439 + 837 = 291276
Step 349: 291276 + 837 = 292113
Step 350: 292113 + 837 = 292950
Step 351: 292950 + 837 = 293787
Step 352: 293787 + 837 = 294624
Step 353: 294624 + 837 = 295461
Step 354: 295461 + 837 = 296298
Step 355: 296298 + 837 = 297135
Step 356: 297135 + 837 = 297972
Step 357: 297972 + 837 = 298809
Step 358: 298809 + 837 = 299646
Step 359: 299646 + 837 = 300483
Step 360: 300483 + 837 = 301320
Step 361: 301320 + 837 = 302157
Step 362: 302157 + 837 = 302994
Step 363: 302994 + 837 = 303831
Step 364: 303831 + 837 = 304668
Step 365: 304668 + 837 = 305505
Step 366: 305505 + 837 = 306342
Step 367: 306342 + 837 = 307179
Step 368: 307179 + 837 = 308016
Step 369: 308016 + 837 = 308853
Step 370: 308853 + 837 = 309690
Step 371: 309690 + 837 = 310527
Step 372: 310527 + 837 = 311364
Step 373: 311364 + 837 = 312201
Step 374: 312201 + 837 = 313038
Step 375: 313038 + 837 = 313875
Step 376: 313875 + 837 = 314712
Step 377: 314712 + 837 = 315549
Step 378: 315549 + 837 = 316386
Step 379: 316386 + 837 = 317223
Step 380: 317223 + 837 = 318060
Step 381: 318060 + 837 = 318897
Step 382: 318897 + 837 = 319734
Step 383: 319734 + 837 = 320571
Step 384: 320571 + 837 = 321408
Step 385: 321408 + 837 = 322245

So, 837*385 = 322245