Alright, let's solve this math problem step by step. First, we have the number 861. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 398. So, we're going to take the number 861 and add it to itself 398 times.
Step 1: 0 + 861 = 861
Step 2: 861 + 861 = 1722
Step 3: 1722 + 861 = 2583
Step 4: 2583 + 861 = 3444
Step 5: 3444 + 861 = 4305
Step 6: 4305 + 861 = 5166
Step 7: 5166 + 861 = 6027
Step 8: 6027 + 861 = 6888
Step 9: 6888 + 861 = 7749
Step 10: 7749 + 861 = 8610
Step 11: 8610 + 861 = 9471
Step 12: 9471 + 861 = 10332
Step 13: 10332 + 861 = 11193
Step 14: 11193 + 861 = 12054
Step 15: 12054 + 861 = 12915
Step 16: 12915 + 861 = 13776
Step 17: 13776 + 861 = 14637
Step 18: 14637 + 861 = 15498
Step 19: 15498 + 861 = 16359
Step 20: 16359 + 861 = 17220
Step 21: 17220 + 861 = 18081
Step 22: 18081 + 861 = 18942
Step 23: 18942 + 861 = 19803
Step 24: 19803 + 861 = 20664
Step 25: 20664 + 861 = 21525
Step 26: 21525 + 861 = 22386
Step 27: 22386 + 861 = 23247
Step 28: 23247 + 861 = 24108
Step 29: 24108 + 861 = 24969
Step 30: 24969 + 861 = 25830
Step 31: 25830 + 861 = 26691
Step 32: 26691 + 861 = 27552
Step 33: 27552 + 861 = 28413
Step 34: 28413 + 861 = 29274
Step 35: 29274 + 861 = 30135
Step 36: 30135 + 861 = 30996
Step 37: 30996 + 861 = 31857
Step 38: 31857 + 861 = 32718
Step 39: 32718 + 861 = 33579
Step 40: 33579 + 861 = 34440
Step 41: 34440 + 861 = 35301
Step 42: 35301 + 861 = 36162
Step 43: 36162 + 861 = 37023
Step 44: 37023 + 861 = 37884
Step 45: 37884 + 861 = 38745
Step 46: 38745 + 861 = 39606
Step 47: 39606 + 861 = 40467
Step 48: 40467 + 861 = 41328
Step 49: 41328 + 861 = 42189
Step 50: 42189 + 861 = 43050
Step 51: 43050 + 861 = 43911
Step 52: 43911 + 861 = 44772
Step 53: 44772 + 861 = 45633
Step 54: 45633 + 861 = 46494
Step 55: 46494 + 861 = 47355
Step 56: 47355 + 861 = 48216
Step 57: 48216 + 861 = 49077
Step 58: 49077 + 861 = 49938
Step 59: 49938 + 861 = 50799
Step 60: 50799 + 861 = 51660
Step 61: 51660 + 861 = 52521
Step 62: 52521 + 861 = 53382
Step 63: 53382 + 861 = 54243
Step 64: 54243 + 861 = 55104
Step 65: 55104 + 861 = 55965
Step 66: 55965 + 861 = 56826
Step 67: 56826 + 861 = 57687
Step 68: 57687 + 861 = 58548
Step 69: 58548 + 861 = 59409
Step 70: 59409 + 861 = 60270
Step 71: 60270 + 861 = 61131
Step 72: 61131 + 861 = 61992
Step 73: 61992 + 861 = 62853
Step 74: 62853 + 861 = 63714
Step 75: 63714 + 861 = 64575
Step 76: 64575 + 861 = 65436
Step 77: 65436 + 861 = 66297
Step 78: 66297 + 861 = 67158
Step 79: 67158 + 861 = 68019
Step 80: 68019 + 861 = 68880
Step 81: 68880 + 861 = 69741
Step 82: 69741 + 861 = 70602
Step 83: 70602 + 861 = 71463
Step 84: 71463 + 861 = 72324
Step 85: 72324 + 861 = 73185
Step 86: 73185 + 861 = 74046
Step 87: 74046 + 861 = 74907
Step 88: 74907 + 861 = 75768
Step 89: 75768 + 861 = 76629
Step 90: 76629 + 861 = 77490
Step 91: 77490 + 861 = 78351
Step 92: 78351 + 861 = 79212
Step 93: 79212 + 861 = 80073
Step 94: 80073 + 861 = 80934
Step 95: 80934 + 861 = 81795
Step 96: 81795 + 861 = 82656
Step 97: 82656 + 861 = 83517
Step 98: 83517 + 861 = 84378
Step 99: 84378 + 861 = 85239
Step 100: 85239 + 861 = 86100
Step 101: 86100 + 861 = 86961
Step 102: 86961 + 861 = 87822
Step 103: 87822 + 861 = 88683
Step 104: 88683 + 861 = 89544
Step 105: 89544 + 861 = 90405
Step 106: 90405 + 861 = 91266
Step 107: 91266 + 861 = 92127
Step 108: 92127 + 861 = 92988
Step 109: 92988 + 861 = 93849
Step 110: 93849 + 861 = 94710
Step 111: 94710 + 861 = 95571
Step 112: 95571 + 861 = 96432
Step 113: 96432 + 861 = 97293
Step 114: 97293 + 861 = 98154
Step 115: 98154 + 861 = 99015
Step 116: 99015 + 861 = 99876
Step 117: 99876 + 861 = 100737
Step 118: 100737 + 861 = 101598
Step 119: 101598 + 861 = 102459
Step 120: 102459 + 861 = 103320
Step 121: 103320 + 861 = 104181
Step 122: 104181 + 861 = 105042
Step 123: 105042 + 861 = 105903
Step 124: 105903 + 861 = 106764
Step 125: 106764 + 861 = 107625
Step 126: 107625 + 861 = 108486
Step 127: 108486 + 861 = 109347
Step 128: 109347 + 861 = 110208
Step 129: 110208 + 861 = 111069
Step 130: 111069 + 861 = 111930
Step 131: 111930 + 861 = 112791
Step 132: 112791 + 861 = 113652
Step 133: 113652 + 861 = 114513
Step 134: 114513 + 861 = 115374
Step 135: 115374 + 861 = 116235
Step 136: 116235 + 861 = 117096
Step 137: 117096 + 861 = 117957
Step 138: 117957 + 861 = 118818
Step 139: 118818 + 861 = 119679
Step 140: 119679 + 861 = 120540
Step 141: 120540 + 861 = 121401
Step 142: 121401 + 861 = 122262
Step 143: 122262 + 861 = 123123
Step 144: 123123 + 861 = 123984
Step 145: 123984 + 861 = 124845
Step 146: 124845 + 861 = 125706
Step 147: 125706 + 861 = 126567
Step 148: 126567 + 861 = 127428
Step 149: 127428 + 861 = 128289
Step 150: 128289 + 861 = 129150
Step 151: 129150 + 861 = 130011
Step 152: 130011 + 861 = 130872
Step 153: 130872 + 861 = 131733
Step 154: 131733 + 861 = 132594
Step 155: 132594 + 861 = 133455
Step 156: 133455 + 861 = 134316
Step 157: 134316 + 861 = 135177
Step 158: 135177 + 861 = 136038
Step 159: 136038 + 861 = 136899
Step 160: 136899 + 861 = 137760
Step 161: 137760 + 861 = 138621
Step 162: 138621 + 861 = 139482
Step 163: 139482 + 861 = 140343
Step 164: 140343 + 861 = 141204
Step 165: 141204 + 861 = 142065
Step 166: 142065 + 861 = 142926
Step 167: 142926 + 861 = 143787
Step 168: 143787 + 861 = 144648
Step 169: 144648 + 861 = 145509
Step 170: 145509 + 861 = 146370
Step 171: 146370 + 861 = 147231
Step 172: 147231 + 861 = 148092
Step 173: 148092 + 861 = 148953
Step 174: 148953 + 861 = 149814
Step 175: 149814 + 861 = 150675
Step 176: 150675 + 861 = 151536
Step 177: 151536 + 861 = 152397
Step 178: 152397 + 861 = 153258
Step 179: 153258 + 861 = 154119
Step 180: 154119 + 861 = 154980
Step 181: 154980 + 861 = 155841
Step 182: 155841 + 861 = 156702
Step 183: 156702 + 861 = 157563
Step 184: 157563 + 861 = 158424
Step 185: 158424 + 861 = 159285
Step 186: 159285 + 861 = 160146
Step 187: 160146 + 861 = 161007
Step 188: 161007 + 861 = 161868
Step 189: 161868 + 861 = 162729
Step 190: 162729 + 861 = 163590
Step 191: 163590 + 861 = 164451
Step 192: 164451 + 861 = 165312
Step 193: 165312 + 861 = 166173
Step 194: 166173 + 861 = 167034
Step 195: 167034 + 861 = 167895
Step 196: 167895 + 861 = 168756
Step 197: 168756 + 861 = 169617
Step 198: 169617 + 861 = 170478
Step 199: 170478 + 861 = 171339
Step 200: 171339 + 861 = 172200
Step 201: 172200 + 861 = 173061
Step 202: 173061 + 861 = 173922
Step 203: 173922 + 861 = 174783
Step 204: 174783 + 861 = 175644
Step 205: 175644 + 861 = 176505
Step 206: 176505 + 861 = 177366
Step 207: 177366 + 861 = 178227
Step 208: 178227 + 861 = 179088
Step 209: 179088 + 861 = 179949
Step 210: 179949 + 861 = 180810
Step 211: 180810 + 861 = 181671
Step 212: 181671 + 861 = 182532
Step 213: 182532 + 861 = 183393
Step 214: 183393 + 861 = 184254
Step 215: 184254 + 861 = 185115
Step 216: 185115 + 861 = 185976
Step 217: 185976 + 861 = 186837
Step 218: 186837 + 861 = 187698
Step 219: 187698 + 861 = 188559
Step 220: 188559 + 861 = 189420
Step 221: 189420 + 861 = 190281
Step 222: 190281 + 861 = 191142
Step 223: 191142 + 861 = 192003
Step 224: 192003 + 861 = 192864
Step 225: 192864 + 861 = 193725
Step 226: 193725 + 861 = 194586
Step 227: 194586 + 861 = 195447
Step 228: 195447 + 861 = 196308
Step 229: 196308 + 861 = 197169
Step 230: 197169 + 861 = 198030
Step 231: 198030 + 861 = 198891
Step 232: 198891 + 861 = 199752
Step 233: 199752 + 861 = 200613
Step 234: 200613 + 861 = 201474
Step 235: 201474 + 861 = 202335
Step 236: 202335 + 861 = 203196
Step 237: 203196 + 861 = 204057
Step 238: 204057 + 861 = 204918
Step 239: 204918 + 861 = 205779
Step 240: 205779 + 861 = 206640
Step 241: 206640 + 861 = 207501
Step 242: 207501 + 861 = 208362
Step 243: 208362 + 861 = 209223
Step 244: 209223 + 861 = 210084
Step 245: 210084 + 861 = 210945
Step 246: 210945 + 861 = 211806
Step 247: 211806 + 861 = 212667
Step 248: 212667 + 861 = 213528
Step 249: 213528 + 861 = 214389
Step 250: 214389 + 861 = 215250
Step 251: 215250 + 861 = 216111
Step 252: 216111 + 861 = 216972
Step 253: 216972 + 861 = 217833
Step 254: 217833 + 861 = 218694
Step 255: 218694 + 861 = 219555
Step 256: 219555 + 861 = 220416
Step 257: 220416 + 861 = 221277
Step 258: 221277 + 861 = 222138
Step 259: 222138 + 861 = 222999
Step 260: 222999 + 861 = 223860
Step 261: 223860 + 861 = 224721
Step 262: 224721 + 861 = 225582
Step 263: 225582 + 861 = 226443
Step 264: 226443 + 861 = 227304
Step 265: 227304 + 861 = 228165
Step 266: 228165 + 861 = 229026
Step 267: 229026 + 861 = 229887
Step 268: 229887 + 861 = 230748
Step 269: 230748 + 861 = 231609
Step 270: 231609 + 861 = 232470
Step 271: 232470 + 861 = 233331
Step 272: 233331 + 861 = 234192
Step 273: 234192 + 861 = 235053
Step 274: 235053 + 861 = 235914
Step 275: 235914 + 861 = 236775
Step 276: 236775 + 861 = 237636
Step 277: 237636 + 861 = 238497
Step 278: 238497 + 861 = 239358
Step 279: 239358 + 861 = 240219
Step 280: 240219 + 861 = 241080
Step 281: 241080 + 861 = 241941
Step 282: 241941 + 861 = 242802
Step 283: 242802 + 861 = 243663
Step 284: 243663 + 861 = 244524
Step 285: 244524 + 861 = 245385
Step 286: 245385 + 861 = 246246
Step 287: 246246 + 861 = 247107
Step 288: 247107 + 861 = 247968
Step 289: 247968 + 861 = 248829
Step 290: 248829 + 861 = 249690
Step 291: 249690 + 861 = 250551
Step 292: 250551 + 861 = 251412
Step 293: 251412 + 861 = 252273
Step 294: 252273 + 861 = 253134
Step 295: 253134 + 861 = 253995
Step 296: 253995 + 861 = 254856
Step 297: 254856 + 861 = 255717
Step 298: 255717 + 861 = 256578
Step 299: 256578 + 861 = 257439
Step 300: 257439 + 861 = 258300
Step 301: 258300 + 861 = 259161
Step 302: 259161 + 861 = 260022
Step 303: 260022 + 861 = 260883
Step 304: 260883 + 861 = 261744
Step 305: 261744 + 861 = 262605
Step 306: 262605 + 861 = 263466
Step 307: 263466 + 861 = 264327
Step 308: 264327 + 861 = 265188
Step 309: 265188 + 861 = 266049
Step 310: 266049 + 861 = 266910
Step 311: 266910 + 861 = 267771
Step 312: 267771 + 861 = 268632
Step 313: 268632 + 861 = 269493
Step 314: 269493 + 861 = 270354
Step 315: 270354 + 861 = 271215
Step 316: 271215 + 861 = 272076
Step 317: 272076 + 861 = 272937
Step 318: 272937 + 861 = 273798
Step 319: 273798 + 861 = 274659
Step 320: 274659 + 861 = 275520
Step 321: 275520 + 861 = 276381
Step 322: 276381 + 861 = 277242
Step 323: 277242 + 861 = 278103
Step 324: 278103 + 861 = 278964
Step 325: 278964 + 861 = 279825
Step 326: 279825 + 861 = 280686
Step 327: 280686 + 861 = 281547
Step 328: 281547 + 861 = 282408
Step 329: 282408 + 861 = 283269
Step 330: 283269 + 861 = 284130
Step 331: 284130 + 861 = 284991
Step 332: 284991 + 861 = 285852
Step 333: 285852 + 861 = 286713
Step 334: 286713 + 861 = 287574
Step 335: 287574 + 861 = 288435
Step 336: 288435 + 861 = 289296
Step 337: 289296 + 861 = 290157
Step 338: 290157 + 861 = 291018
Step 339: 291018 + 861 = 291879
Step 340: 291879 + 861 = 292740
Step 341: 292740 + 861 = 293601
Step 342: 293601 + 861 = 294462
Step 343: 294462 + 861 = 295323
Step 344: 295323 + 861 = 296184
Step 345: 296184 + 861 = 297045
Step 346: 297045 + 861 = 297906
Step 347: 297906 + 861 = 298767
Step 348: 298767 + 861 = 299628
Step 349: 299628 + 861 = 300489
Step 350: 300489 + 861 = 301350
Step 351: 301350 + 861 = 302211
Step 352: 302211 + 861 = 303072
Step 353: 303072 + 861 = 303933
Step 354: 303933 + 861 = 304794
Step 355: 304794 + 861 = 305655
Step 356: 305655 + 861 = 306516
Step 357: 306516 + 861 = 307377
Step 358: 307377 + 861 = 308238
Step 359: 308238 + 861 = 309099
Step 360: 309099 + 861 = 309960
Step 361: 309960 + 861 = 310821
Step 362: 310821 + 861 = 311682
Step 363: 311682 + 861 = 312543
Step 364: 312543 + 861 = 313404
Step 365: 313404 + 861 = 314265
Step 366: 314265 + 861 = 315126
Step 367: 315126 + 861 = 315987
Step 368: 315987 + 861 = 316848
Step 369: 316848 + 861 = 317709
Step 370: 317709 + 861 = 318570
Step 371: 318570 + 861 = 319431
Step 372: 319431 + 861 = 320292
Step 373: 320292 + 861 = 321153
Step 374: 321153 + 861 = 322014
Step 375: 322014 + 861 = 322875
Step 376: 322875 + 861 = 323736
Step 377: 323736 + 861 = 324597
Step 378: 324597 + 861 = 325458
Step 379: 325458 + 861 = 326319
Step 380: 326319 + 861 = 327180
Step 381: 327180 + 861 = 328041
Step 382: 328041 + 861 = 328902
Step 383: 328902 + 861 = 329763
Step 384: 329763 + 861 = 330624
Step 385: 330624 + 861 = 331485
Step 386: 331485 + 861 = 332346
Step 387: 332346 + 861 = 333207
Step 388: 333207 + 861 = 334068
Step 389: 334068 + 861 = 334929
Step 390: 334929 + 861 = 335790
Step 391: 335790 + 861 = 336651
Step 392: 336651 + 861 = 337512
Step 393: 337512 + 861 = 338373
Step 394: 338373 + 861 = 339234
Step 395: 339234 + 861 = 340095
Step 396: 340095 + 861 = 340956
Step 397: 340956 + 861 = 341817
Step 398: 341817 + 861 = 342678

So, 861*398 = 342678