Let's get this math done. We have 981 and we're going to multiply it by 187. This is the same as taking 981 and adding it to itself 187 times.
Step 1: 0 + 981 = 981
Step 2: 981 + 981 = 1962
Step 3: 1962 + 981 = 2943
Step 4: 2943 + 981 = 3924
Step 5: 3924 + 981 = 4905
Step 6: 4905 + 981 = 5886
Step 7: 5886 + 981 = 6867
Step 8: 6867 + 981 = 7848
Step 9: 7848 + 981 = 8829
Step 10: 8829 + 981 = 9810
Step 11: 9810 + 981 = 10791
Step 12: 10791 + 981 = 11772
Step 13: 11772 + 981 = 12753
Step 14: 12753 + 981 = 13734
Step 15: 13734 + 981 = 14715
Step 16: 14715 + 981 = 15696
Step 17: 15696 + 981 = 16677
Step 18: 16677 + 981 = 17658
Step 19: 17658 + 981 = 18639
Step 20: 18639 + 981 = 19620
Step 21: 19620 + 981 = 20601
Step 22: 20601 + 981 = 21582
Step 23: 21582 + 981 = 22563
Step 24: 22563 + 981 = 23544
Step 25: 23544 + 981 = 24525
Step 26: 24525 + 981 = 25506
Step 27: 25506 + 981 = 26487
Step 28: 26487 + 981 = 27468
Step 29: 27468 + 981 = 28449
Step 30: 28449 + 981 = 29430
Step 31: 29430 + 981 = 30411
Step 32: 30411 + 981 = 31392
Step 33: 31392 + 981 = 32373
Step 34: 32373 + 981 = 33354
Step 35: 33354 + 981 = 34335
Step 36: 34335 + 981 = 35316
Step 37: 35316 + 981 = 36297
Step 38: 36297 + 981 = 37278
Step 39: 37278 + 981 = 38259
Step 40: 38259 + 981 = 39240
Step 41: 39240 + 981 = 40221
Step 42: 40221 + 981 = 41202
Step 43: 41202 + 981 = 42183
Step 44: 42183 + 981 = 43164
Step 45: 43164 + 981 = 44145
Step 46: 44145 + 981 = 45126
Step 47: 45126 + 981 = 46107
Step 48: 46107 + 981 = 47088
Step 49: 47088 + 981 = 48069
Step 50: 48069 + 981 = 49050
Step 51: 49050 + 981 = 50031
Step 52: 50031 + 981 = 51012
Step 53: 51012 + 981 = 51993
Step 54: 51993 + 981 = 52974
Step 55: 52974 + 981 = 53955
Step 56: 53955 + 981 = 54936
Step 57: 54936 + 981 = 55917
Step 58: 55917 + 981 = 56898
Step 59: 56898 + 981 = 57879
Step 60: 57879 + 981 = 58860
Step 61: 58860 + 981 = 59841
Step 62: 59841 + 981 = 60822
Step 63: 60822 + 981 = 61803
Step 64: 61803 + 981 = 62784
Step 65: 62784 + 981 = 63765
Step 66: 63765 + 981 = 64746
Step 67: 64746 + 981 = 65727
Step 68: 65727 + 981 = 66708
Step 69: 66708 + 981 = 67689
Step 70: 67689 + 981 = 68670
Step 71: 68670 + 981 = 69651
Step 72: 69651 + 981 = 70632
Step 73: 70632 + 981 = 71613
Step 74: 71613 + 981 = 72594
Step 75: 72594 + 981 = 73575
Step 76: 73575 + 981 = 74556
Step 77: 74556 + 981 = 75537
Step 78: 75537 + 981 = 76518
Step 79: 76518 + 981 = 77499
Step 80: 77499 + 981 = 78480
Step 81: 78480 + 981 = 79461
Step 82: 79461 + 981 = 80442
Step 83: 80442 + 981 = 81423
Step 84: 81423 + 981 = 82404
Step 85: 82404 + 981 = 83385
Step 86: 83385 + 981 = 84366
Step 87: 84366 + 981 = 85347
Step 88: 85347 + 981 = 86328
Step 89: 86328 + 981 = 87309
Step 90: 87309 + 981 = 88290
Step 91: 88290 + 981 = 89271
Step 92: 89271 + 981 = 90252
Step 93: 90252 + 981 = 91233
Step 94: 91233 + 981 = 92214
Step 95: 92214 + 981 = 93195
Step 96: 93195 + 981 = 94176
Step 97: 94176 + 981 = 95157
Step 98: 95157 + 981 = 96138
Step 99: 96138 + 981 = 97119
Step 100: 97119 + 981 = 98100
Step 101: 98100 + 981 = 99081
Step 102: 99081 + 981 = 100062
Step 103: 100062 + 981 = 101043
Step 104: 101043 + 981 = 102024
Step 105: 102024 + 981 = 103005
Step 106: 103005 + 981 = 103986
Step 107: 103986 + 981 = 104967
Step 108: 104967 + 981 = 105948
Step 109: 105948 + 981 = 106929
Step 110: 106929 + 981 = 107910
Step 111: 107910 + 981 = 108891
Step 112: 108891 + 981 = 109872
Step 113: 109872 + 981 = 110853
Step 114: 110853 + 981 = 111834
Step 115: 111834 + 981 = 112815
Step 116: 112815 + 981 = 113796
Step 117: 113796 + 981 = 114777
Step 118: 114777 + 981 = 115758
Step 119: 115758 + 981 = 116739
Step 120: 116739 + 981 = 117720
Step 121: 117720 + 981 = 118701
Step 122: 118701 + 981 = 119682
Step 123: 119682 + 981 = 120663
Step 124: 120663 + 981 = 121644
Step 125: 121644 + 981 = 122625
Step 126: 122625 + 981 = 123606
Step 127: 123606 + 981 = 124587
Step 128: 124587 + 981 = 125568
Step 129: 125568 + 981 = 126549
Step 130: 126549 + 981 = 127530
Step 131: 127530 + 981 = 128511
Step 132: 128511 + 981 = 129492
Step 133: 129492 + 981 = 130473
Step 134: 130473 + 981 = 131454
Step 135: 131454 + 981 = 132435
Step 136: 132435 + 981 = 133416
Step 137: 133416 + 981 = 134397
Step 138: 134397 + 981 = 135378
Step 139: 135378 + 981 = 136359
Step 140: 136359 + 981 = 137340
Step 141: 137340 + 981 = 138321
Step 142: 138321 + 981 = 139302
Step 143: 139302 + 981 = 140283
Step 144: 140283 + 981 = 141264
Step 145: 141264 + 981 = 142245
Step 146: 142245 + 981 = 143226
Step 147: 143226 + 981 = 144207
Step 148: 144207 + 981 = 145188
Step 149: 145188 + 981 = 146169
Step 150: 146169 + 981 = 147150
Step 151: 147150 + 981 = 148131
Step 152: 148131 + 981 = 149112
Step 153: 149112 + 981 = 150093
Step 154: 150093 + 981 = 151074
Step 155: 151074 + 981 = 152055
Step 156: 152055 + 981 = 153036
Step 157: 153036 + 981 = 154017
Step 158: 154017 + 981 = 154998
Step 159: 154998 + 981 = 155979
Step 160: 155979 + 981 = 156960
Step 161: 156960 + 981 = 157941
Step 162: 157941 + 981 = 158922
Step 163: 158922 + 981 = 159903
Step 164: 159903 + 981 = 160884
Step 165: 160884 + 981 = 161865
Step 166: 161865 + 981 = 162846
Step 167: 162846 + 981 = 163827
Step 168: 163827 + 981 = 164808
Step 169: 164808 + 981 = 165789
Step 170: 165789 + 981 = 166770
Step 171: 166770 + 981 = 167751
Step 172: 167751 + 981 = 168732
Step 173: 168732 + 981 = 169713
Step 174: 169713 + 981 = 170694
Step 175: 170694 + 981 = 171675
Step 176: 171675 + 981 = 172656
Step 177: 172656 + 981 = 173637
Step 178: 173637 + 981 = 174618
Step 179: 174618 + 981 = 175599
Step 180: 175599 + 981 = 176580
Step 181: 176580 + 981 = 177561
Step 182: 177561 + 981 = 178542
Step 183: 178542 + 981 = 179523
Step 184: 179523 + 981 = 180504
Step 185: 180504 + 981 = 181485
Step 186: 181485 + 981 = 182466
Step 187: 182466 + 981 = 183447

So, 981*187 = 183447