Alright, let's solve this math problem step by step. First, we have the number 81. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 489. So, we're going to take the number 81 and add it to itself 489 times.
Step 1: 0 + 81 = 81
Step 2: 81 + 81 = 162
Step 3: 162 + 81 = 243
Step 4: 243 + 81 = 324
Step 5: 324 + 81 = 405
Step 6: 405 + 81 = 486
Step 7: 486 + 81 = 567
Step 8: 567 + 81 = 648
Step 9: 648 + 81 = 729
Step 10: 729 + 81 = 810
Step 11: 810 + 81 = 891
Step 12: 891 + 81 = 972
Step 13: 972 + 81 = 1053
Step 14: 1053 + 81 = 1134
Step 15: 1134 + 81 = 1215
Step 16: 1215 + 81 = 1296
Step 17: 1296 + 81 = 1377
Step 18: 1377 + 81 = 1458
Step 19: 1458 + 81 = 1539
Step 20: 1539 + 81 = 1620
Step 21: 1620 + 81 = 1701
Step 22: 1701 + 81 = 1782
Step 23: 1782 + 81 = 1863
Step 24: 1863 + 81 = 1944
Step 25: 1944 + 81 = 2025
Step 26: 2025 + 81 = 2106
Step 27: 2106 + 81 = 2187
Step 28: 2187 + 81 = 2268
Step 29: 2268 + 81 = 2349
Step 30: 2349 + 81 = 2430
Step 31: 2430 + 81 = 2511
Step 32: 2511 + 81 = 2592
Step 33: 2592 + 81 = 2673
Step 34: 2673 + 81 = 2754
Step 35: 2754 + 81 = 2835
Step 36: 2835 + 81 = 2916
Step 37: 2916 + 81 = 2997
Step 38: 2997 + 81 = 3078
Step 39: 3078 + 81 = 3159
Step 40: 3159 + 81 = 3240
Step 41: 3240 + 81 = 3321
Step 42: 3321 + 81 = 3402
Step 43: 3402 + 81 = 3483
Step 44: 3483 + 81 = 3564
Step 45: 3564 + 81 = 3645
Step 46: 3645 + 81 = 3726
Step 47: 3726 + 81 = 3807
Step 48: 3807 + 81 = 3888
Step 49: 3888 + 81 = 3969
Step 50: 3969 + 81 = 4050
Step 51: 4050 + 81 = 4131
Step 52: 4131 + 81 = 4212
Step 53: 4212 + 81 = 4293
Step 54: 4293 + 81 = 4374
Step 55: 4374 + 81 = 4455
Step 56: 4455 + 81 = 4536
Step 57: 4536 + 81 = 4617
Step 58: 4617 + 81 = 4698
Step 59: 4698 + 81 = 4779
Step 60: 4779 + 81 = 4860
Step 61: 4860 + 81 = 4941
Step 62: 4941 + 81 = 5022
Step 63: 5022 + 81 = 5103
Step 64: 5103 + 81 = 5184
Step 65: 5184 + 81 = 5265
Step 66: 5265 + 81 = 5346
Step 67: 5346 + 81 = 5427
Step 68: 5427 + 81 = 5508
Step 69: 5508 + 81 = 5589
Step 70: 5589 + 81 = 5670
Step 71: 5670 + 81 = 5751
Step 72: 5751 + 81 = 5832
Step 73: 5832 + 81 = 5913
Step 74: 5913 + 81 = 5994
Step 75: 5994 + 81 = 6075
Step 76: 6075 + 81 = 6156
Step 77: 6156 + 81 = 6237
Step 78: 6237 + 81 = 6318
Step 79: 6318 + 81 = 6399
Step 80: 6399 + 81 = 6480
Step 81: 6480 + 81 = 6561
Step 82: 6561 + 81 = 6642
Step 83: 6642 + 81 = 6723
Step 84: 6723 + 81 = 6804
Step 85: 6804 + 81 = 6885
Step 86: 6885 + 81 = 6966
Step 87: 6966 + 81 = 7047
Step 88: 7047 + 81 = 7128
Step 89: 7128 + 81 = 7209
Step 90: 7209 + 81 = 7290
Step 91: 7290 + 81 = 7371
Step 92: 7371 + 81 = 7452
Step 93: 7452 + 81 = 7533
Step 94: 7533 + 81 = 7614
Step 95: 7614 + 81 = 7695
Step 96: 7695 + 81 = 7776
Step 97: 7776 + 81 = 7857
Step 98: 7857 + 81 = 7938
Step 99: 7938 + 81 = 8019
Step 100: 8019 + 81 = 8100
Step 101: 8100 + 81 = 8181
Step 102: 8181 + 81 = 8262
Step 103: 8262 + 81 = 8343
Step 104: 8343 + 81 = 8424
Step 105: 8424 + 81 = 8505
Step 106: 8505 + 81 = 8586
Step 107: 8586 + 81 = 8667
Step 108: 8667 + 81 = 8748
Step 109: 8748 + 81 = 8829
Step 110: 8829 + 81 = 8910
Step 111: 8910 + 81 = 8991
Step 112: 8991 + 81 = 9072
Step 113: 9072 + 81 = 9153
Step 114: 9153 + 81 = 9234
Step 115: 9234 + 81 = 9315
Step 116: 9315 + 81 = 9396
Step 117: 9396 + 81 = 9477
Step 118: 9477 + 81 = 9558
Step 119: 9558 + 81 = 9639
Step 120: 9639 + 81 = 9720
Step 121: 9720 + 81 = 9801
Step 122: 9801 + 81 = 9882
Step 123: 9882 + 81 = 9963
Step 124: 9963 + 81 = 10044
Step 125: 10044 + 81 = 10125
Step 126: 10125 + 81 = 10206
Step 127: 10206 + 81 = 10287
Step 128: 10287 + 81 = 10368
Step 129: 10368 + 81 = 10449
Step 130: 10449 + 81 = 10530
Step 131: 10530 + 81 = 10611
Step 132: 10611 + 81 = 10692
Step 133: 10692 + 81 = 10773
Step 134: 10773 + 81 = 10854
Step 135: 10854 + 81 = 10935
Step 136: 10935 + 81 = 11016
Step 137: 11016 + 81 = 11097
Step 138: 11097 + 81 = 11178
Step 139: 11178 + 81 = 11259
Step 140: 11259 + 81 = 11340
Step 141: 11340 + 81 = 11421
Step 142: 11421 + 81 = 11502
Step 143: 11502 + 81 = 11583
Step 144: 11583 + 81 = 11664
Step 145: 11664 + 81 = 11745
Step 146: 11745 + 81 = 11826
Step 147: 11826 + 81 = 11907
Step 148: 11907 + 81 = 11988
Step 149: 11988 + 81 = 12069
Step 150: 12069 + 81 = 12150
Step 151: 12150 + 81 = 12231
Step 152: 12231 + 81 = 12312
Step 153: 12312 + 81 = 12393
Step 154: 12393 + 81 = 12474
Step 155: 12474 + 81 = 12555
Step 156: 12555 + 81 = 12636
Step 157: 12636 + 81 = 12717
Step 158: 12717 + 81 = 12798
Step 159: 12798 + 81 = 12879
Step 160: 12879 + 81 = 12960
Step 161: 12960 + 81 = 13041
Step 162: 13041 + 81 = 13122
Step 163: 13122 + 81 = 13203
Step 164: 13203 + 81 = 13284
Step 165: 13284 + 81 = 13365
Step 166: 13365 + 81 = 13446
Step 167: 13446 + 81 = 13527
Step 168: 13527 + 81 = 13608
Step 169: 13608 + 81 = 13689
Step 170: 13689 + 81 = 13770
Step 171: 13770 + 81 = 13851
Step 172: 13851 + 81 = 13932
Step 173: 13932 + 81 = 14013
Step 174: 14013 + 81 = 14094
Step 175: 14094 + 81 = 14175
Step 176: 14175 + 81 = 14256
Step 177: 14256 + 81 = 14337
Step 178: 14337 + 81 = 14418
Step 179: 14418 + 81 = 14499
Step 180: 14499 + 81 = 14580
Step 181: 14580 + 81 = 14661
Step 182: 14661 + 81 = 14742
Step 183: 14742 + 81 = 14823
Step 184: 14823 + 81 = 14904
Step 185: 14904 + 81 = 14985
Step 186: 14985 + 81 = 15066
Step 187: 15066 + 81 = 15147
Step 188: 15147 + 81 = 15228
Step 189: 15228 + 81 = 15309
Step 190: 15309 + 81 = 15390
Step 191: 15390 + 81 = 15471
Step 192: 15471 + 81 = 15552
Step 193: 15552 + 81 = 15633
Step 194: 15633 + 81 = 15714
Step 195: 15714 + 81 = 15795
Step 196: 15795 + 81 = 15876
Step 197: 15876 + 81 = 15957
Step 198: 15957 + 81 = 16038
Step 199: 16038 + 81 = 16119
Step 200: 16119 + 81 = 16200
Step 201: 16200 + 81 = 16281
Step 202: 16281 + 81 = 16362
Step 203: 16362 + 81 = 16443
Step 204: 16443 + 81 = 16524
Step 205: 16524 + 81 = 16605
Step 206: 16605 + 81 = 16686
Step 207: 16686 + 81 = 16767
Step 208: 16767 + 81 = 16848
Step 209: 16848 + 81 = 16929
Step 210: 16929 + 81 = 17010
Step 211: 17010 + 81 = 17091
Step 212: 17091 + 81 = 17172
Step 213: 17172 + 81 = 17253
Step 214: 17253 + 81 = 17334
Step 215: 17334 + 81 = 17415
Step 216: 17415 + 81 = 17496
Step 217: 17496 + 81 = 17577
Step 218: 17577 + 81 = 17658
Step 219: 17658 + 81 = 17739
Step 220: 17739 + 81 = 17820
Step 221: 17820 + 81 = 17901
Step 222: 17901 + 81 = 17982
Step 223: 17982 + 81 = 18063
Step 224: 18063 + 81 = 18144
Step 225: 18144 + 81 = 18225
Step 226: 18225 + 81 = 18306
Step 227: 18306 + 81 = 18387
Step 228: 18387 + 81 = 18468
Step 229: 18468 + 81 = 18549
Step 230: 18549 + 81 = 18630
Step 231: 18630 + 81 = 18711
Step 232: 18711 + 81 = 18792
Step 233: 18792 + 81 = 18873
Step 234: 18873 + 81 = 18954
Step 235: 18954 + 81 = 19035
Step 236: 19035 + 81 = 19116
Step 237: 19116 + 81 = 19197
Step 238: 19197 + 81 = 19278
Step 239: 19278 + 81 = 19359
Step 240: 19359 + 81 = 19440
Step 241: 19440 + 81 = 19521
Step 242: 19521 + 81 = 19602
Step 243: 19602 + 81 = 19683
Step 244: 19683 + 81 = 19764
Step 245: 19764 + 81 = 19845
Step 246: 19845 + 81 = 19926
Step 247: 19926 + 81 = 20007
Step 248: 20007 + 81 = 20088
Step 249: 20088 + 81 = 20169
Step 250: 20169 + 81 = 20250
Step 251: 20250 + 81 = 20331
Step 252: 20331 + 81 = 20412
Step 253: 20412 + 81 = 20493
Step 254: 20493 + 81 = 20574
Step 255: 20574 + 81 = 20655
Step 256: 20655 + 81 = 20736
Step 257: 20736 + 81 = 20817
Step 258: 20817 + 81 = 20898
Step 259: 20898 + 81 = 20979
Step 260: 20979 + 81 = 21060
Step 261: 21060 + 81 = 21141
Step 262: 21141 + 81 = 21222
Step 263: 21222 + 81 = 21303
Step 264: 21303 + 81 = 21384
Step 265: 21384 + 81 = 21465
Step 266: 21465 + 81 = 21546
Step 267: 21546 + 81 = 21627
Step 268: 21627 + 81 = 21708
Step 269: 21708 + 81 = 21789
Step 270: 21789 + 81 = 21870
Step 271: 21870 + 81 = 21951
Step 272: 21951 + 81 = 22032
Step 273: 22032 + 81 = 22113
Step 274: 22113 + 81 = 22194
Step 275: 22194 + 81 = 22275
Step 276: 22275 + 81 = 22356
Step 277: 22356 + 81 = 22437
Step 278: 22437 + 81 = 22518
Step 279: 22518 + 81 = 22599
Step 280: 22599 + 81 = 22680
Step 281: 22680 + 81 = 22761
Step 282: 22761 + 81 = 22842
Step 283: 22842 + 81 = 22923
Step 284: 22923 + 81 = 23004
Step 285: 23004 + 81 = 23085
Step 286: 23085 + 81 = 23166
Step 287: 23166 + 81 = 23247
Step 288: 23247 + 81 = 23328
Step 289: 23328 + 81 = 23409
Step 290: 23409 + 81 = 23490
Step 291: 23490 + 81 = 23571
Step 292: 23571 + 81 = 23652
Step 293: 23652 + 81 = 23733
Step 294: 23733 + 81 = 23814
Step 295: 23814 + 81 = 23895
Step 296: 23895 + 81 = 23976
Step 297: 23976 + 81 = 24057
Step 298: 24057 + 81 = 24138
Step 299: 24138 + 81 = 24219
Step 300: 24219 + 81 = 24300
Step 301: 24300 + 81 = 24381
Step 302: 24381 + 81 = 24462
Step 303: 24462 + 81 = 24543
Step 304: 24543 + 81 = 24624
Step 305: 24624 + 81 = 24705
Step 306: 24705 + 81 = 24786
Step 307: 24786 + 81 = 24867
Step 308: 24867 + 81 = 24948
Step 309: 24948 + 81 = 25029
Step 310: 25029 + 81 = 25110
Step 311: 25110 + 81 = 25191
Step 312: 25191 + 81 = 25272
Step 313: 25272 + 81 = 25353
Step 314: 25353 + 81 = 25434
Step 315: 25434 + 81 = 25515
Step 316: 25515 + 81 = 25596
Step 317: 25596 + 81 = 25677
Step 318: 25677 + 81 = 25758
Step 319: 25758 + 81 = 25839
Step 320: 25839 + 81 = 25920
Step 321: 25920 + 81 = 26001
Step 322: 26001 + 81 = 26082
Step 323: 26082 + 81 = 26163
Step 324: 26163 + 81 = 26244
Step 325: 26244 + 81 = 26325
Step 326: 26325 + 81 = 26406
Step 327: 26406 + 81 = 26487
Step 328: 26487 + 81 = 26568
Step 329: 26568 + 81 = 26649
Step 330: 26649 + 81 = 26730
Step 331: 26730 + 81 = 26811
Step 332: 26811 + 81 = 26892
Step 333: 26892 + 81 = 26973
Step 334: 26973 + 81 = 27054
Step 335: 27054 + 81 = 27135
Step 336: 27135 + 81 = 27216
Step 337: 27216 + 81 = 27297
Step 338: 27297 + 81 = 27378
Step 339: 27378 + 81 = 27459
Step 340: 27459 + 81 = 27540
Step 341: 27540 + 81 = 27621
Step 342: 27621 + 81 = 27702
Step 343: 27702 + 81 = 27783
Step 344: 27783 + 81 = 27864
Step 345: 27864 + 81 = 27945
Step 346: 27945 + 81 = 28026
Step 347: 28026 + 81 = 28107
Step 348: 28107 + 81 = 28188
Step 349: 28188 + 81 = 28269
Step 350: 28269 + 81 = 28350
Step 351: 28350 + 81 = 28431
Step 352: 28431 + 81 = 28512
Step 353: 28512 + 81 = 28593
Step 354: 28593 + 81 = 28674
Step 355: 28674 + 81 = 28755
Step 356: 28755 + 81 = 28836
Step 357: 28836 + 81 = 28917
Step 358: 28917 + 81 = 28998
Step 359: 28998 + 81 = 29079
Step 360: 29079 + 81 = 29160
Step 361: 29160 + 81 = 29241
Step 362: 29241 + 81 = 29322
Step 363: 29322 + 81 = 29403
Step 364: 29403 + 81 = 29484
Step 365: 29484 + 81 = 29565
Step 366: 29565 + 81 = 29646
Step 367: 29646 + 81 = 29727
Step 368: 29727 + 81 = 29808
Step 369: 29808 + 81 = 29889
Step 370: 29889 + 81 = 29970
Step 371: 29970 + 81 = 30051
Step 372: 30051 + 81 = 30132
Step 373: 30132 + 81 = 30213
Step 374: 30213 + 81 = 30294
Step 375: 30294 + 81 = 30375
Step 376: 30375 + 81 = 30456
Step 377: 30456 + 81 = 30537
Step 378: 30537 + 81 = 30618
Step 379: 30618 + 81 = 30699
Step 380: 30699 + 81 = 30780
Step 381: 30780 + 81 = 30861
Step 382: 30861 + 81 = 30942
Step 383: 30942 + 81 = 31023
Step 384: 31023 + 81 = 31104
Step 385: 31104 + 81 = 31185
Step 386: 31185 + 81 = 31266
Step 387: 31266 + 81 = 31347
Step 388: 31347 + 81 = 31428
Step 389: 31428 + 81 = 31509
Step 390: 31509 + 81 = 31590
Step 391: 31590 + 81 = 31671
Step 392: 31671 + 81 = 31752
Step 393: 31752 + 81 = 31833
Step 394: 31833 + 81 = 31914
Step 395: 31914 + 81 = 31995
Step 396: 31995 + 81 = 32076
Step 397: 32076 + 81 = 32157
Step 398: 32157 + 81 = 32238
Step 399: 32238 + 81 = 32319
Step 400: 32319 + 81 = 32400
Step 401: 32400 + 81 = 32481
Step 402: 32481 + 81 = 32562
Step 403: 32562 + 81 = 32643
Step 404: 32643 + 81 = 32724
Step 405: 32724 + 81 = 32805
Step 406: 32805 + 81 = 32886
Step 407: 32886 + 81 = 32967
Step 408: 32967 + 81 = 33048
Step 409: 33048 + 81 = 33129
Step 410: 33129 + 81 = 33210
Step 411: 33210 + 81 = 33291
Step 412: 33291 + 81 = 33372
Step 413: 33372 + 81 = 33453
Step 414: 33453 + 81 = 33534
Step 415: 33534 + 81 = 33615
Step 416: 33615 + 81 = 33696
Step 417: 33696 + 81 = 33777
Step 418: 33777 + 81 = 33858
Step 419: 33858 + 81 = 33939
Step 420: 33939 + 81 = 34020
Step 421: 34020 + 81 = 34101
Step 422: 34101 + 81 = 34182
Step 423: 34182 + 81 = 34263
Step 424: 34263 + 81 = 34344
Step 425: 34344 + 81 = 34425
Step 426: 34425 + 81 = 34506
Step 427: 34506 + 81 = 34587
Step 428: 34587 + 81 = 34668
Step 429: 34668 + 81 = 34749
Step 430: 34749 + 81 = 34830
Step 431: 34830 + 81 = 34911
Step 432: 34911 + 81 = 34992
Step 433: 34992 + 81 = 35073
Step 434: 35073 + 81 = 35154
Step 435: 35154 + 81 = 35235
Step 436: 35235 + 81 = 35316
Step 437: 35316 + 81 = 35397
Step 438: 35397 + 81 = 35478
Step 439: 35478 + 81 = 35559
Step 440: 35559 + 81 = 35640
Step 441: 35640 + 81 = 35721
Step 442: 35721 + 81 = 35802
Step 443: 35802 + 81 = 35883
Step 444: 35883 + 81 = 35964
Step 445: 35964 + 81 = 36045
Step 446: 36045 + 81 = 36126
Step 447: 36126 + 81 = 36207
Step 448: 36207 + 81 = 36288
Step 449: 36288 + 81 = 36369
Step 450: 36369 + 81 = 36450
Step 451: 36450 + 81 = 36531
Step 452: 36531 + 81 = 36612
Step 453: 36612 + 81 = 36693
Step 454: 36693 + 81 = 36774
Step 455: 36774 + 81 = 36855
Step 456: 36855 + 81 = 36936
Step 457: 36936 + 81 = 37017
Step 458: 37017 + 81 = 37098
Step 459: 37098 + 81 = 37179
Step 460: 37179 + 81 = 37260
Step 461: 37260 + 81 = 37341
Step 462: 37341 + 81 = 37422
Step 463: 37422 + 81 = 37503
Step 464: 37503 + 81 = 37584
Step 465: 37584 + 81 = 37665
Step 466: 37665 + 81 = 37746
Step 467: 37746 + 81 = 37827
Step 468: 37827 + 81 = 37908
Step 469: 37908 + 81 = 37989
Step 470: 37989 + 81 = 38070
Step 471: 38070 + 81 = 38151
Step 472: 38151 + 81 = 38232
Step 473: 38232 + 81 = 38313
Step 474: 38313 + 81 = 38394
Step 475: 38394 + 81 = 38475
Step 476: 38475 + 81 = 38556
Step 477: 38556 + 81 = 38637
Step 478: 38637 + 81 = 38718
Step 479: 38718 + 81 = 38799
Step 480: 38799 + 81 = 38880
Step 481: 38880 + 81 = 38961
Step 482: 38961 + 81 = 39042
Step 483: 39042 + 81 = 39123
Step 484: 39123 + 81 = 39204
Step 485: 39204 + 81 = 39285
Step 486: 39285 + 81 = 39366
Step 487: 39366 + 81 = 39447
Step 488: 39447 + 81 = 39528
Step 489: 39528 + 81 = 39609

So, 81*489 = 39609