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 183. So, we're going to take the number 861 and add it to itself 183 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

So, 861*183 = 157563