Alright, let's solve this math problem step by step. First, we have the number 387. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 131. So, we're going to take the number 387 and add it to itself 131 times.
Step 1: 0 + 387 = 387
Step 2: 387 + 387 = 774
Step 3: 774 + 387 = 1161
Step 4: 1161 + 387 = 1548
Step 5: 1548 + 387 = 1935
Step 6: 1935 + 387 = 2322
Step 7: 2322 + 387 = 2709
Step 8: 2709 + 387 = 3096
Step 9: 3096 + 387 = 3483
Step 10: 3483 + 387 = 3870
Step 11: 3870 + 387 = 4257
Step 12: 4257 + 387 = 4644
Step 13: 4644 + 387 = 5031
Step 14: 5031 + 387 = 5418
Step 15: 5418 + 387 = 5805
Step 16: 5805 + 387 = 6192
Step 17: 6192 + 387 = 6579
Step 18: 6579 + 387 = 6966
Step 19: 6966 + 387 = 7353
Step 20: 7353 + 387 = 7740
Step 21: 7740 + 387 = 8127
Step 22: 8127 + 387 = 8514
Step 23: 8514 + 387 = 8901
Step 24: 8901 + 387 = 9288
Step 25: 9288 + 387 = 9675
Step 26: 9675 + 387 = 10062
Step 27: 10062 + 387 = 10449
Step 28: 10449 + 387 = 10836
Step 29: 10836 + 387 = 11223
Step 30: 11223 + 387 = 11610
Step 31: 11610 + 387 = 11997
Step 32: 11997 + 387 = 12384
Step 33: 12384 + 387 = 12771
Step 34: 12771 + 387 = 13158
Step 35: 13158 + 387 = 13545
Step 36: 13545 + 387 = 13932
Step 37: 13932 + 387 = 14319
Step 38: 14319 + 387 = 14706
Step 39: 14706 + 387 = 15093
Step 40: 15093 + 387 = 15480
Step 41: 15480 + 387 = 15867
Step 42: 15867 + 387 = 16254
Step 43: 16254 + 387 = 16641
Step 44: 16641 + 387 = 17028
Step 45: 17028 + 387 = 17415
Step 46: 17415 + 387 = 17802
Step 47: 17802 + 387 = 18189
Step 48: 18189 + 387 = 18576
Step 49: 18576 + 387 = 18963
Step 50: 18963 + 387 = 19350
Step 51: 19350 + 387 = 19737
Step 52: 19737 + 387 = 20124
Step 53: 20124 + 387 = 20511
Step 54: 20511 + 387 = 20898
Step 55: 20898 + 387 = 21285
Step 56: 21285 + 387 = 21672
Step 57: 21672 + 387 = 22059
Step 58: 22059 + 387 = 22446
Step 59: 22446 + 387 = 22833
Step 60: 22833 + 387 = 23220
Step 61: 23220 + 387 = 23607
Step 62: 23607 + 387 = 23994
Step 63: 23994 + 387 = 24381
Step 64: 24381 + 387 = 24768
Step 65: 24768 + 387 = 25155
Step 66: 25155 + 387 = 25542
Step 67: 25542 + 387 = 25929
Step 68: 25929 + 387 = 26316
Step 69: 26316 + 387 = 26703
Step 70: 26703 + 387 = 27090
Step 71: 27090 + 387 = 27477
Step 72: 27477 + 387 = 27864
Step 73: 27864 + 387 = 28251
Step 74: 28251 + 387 = 28638
Step 75: 28638 + 387 = 29025
Step 76: 29025 + 387 = 29412
Step 77: 29412 + 387 = 29799
Step 78: 29799 + 387 = 30186
Step 79: 30186 + 387 = 30573
Step 80: 30573 + 387 = 30960
Step 81: 30960 + 387 = 31347
Step 82: 31347 + 387 = 31734
Step 83: 31734 + 387 = 32121
Step 84: 32121 + 387 = 32508
Step 85: 32508 + 387 = 32895
Step 86: 32895 + 387 = 33282
Step 87: 33282 + 387 = 33669
Step 88: 33669 + 387 = 34056
Step 89: 34056 + 387 = 34443
Step 90: 34443 + 387 = 34830
Step 91: 34830 + 387 = 35217
Step 92: 35217 + 387 = 35604
Step 93: 35604 + 387 = 35991
Step 94: 35991 + 387 = 36378
Step 95: 36378 + 387 = 36765
Step 96: 36765 + 387 = 37152
Step 97: 37152 + 387 = 37539
Step 98: 37539 + 387 = 37926
Step 99: 37926 + 387 = 38313
Step 100: 38313 + 387 = 38700
Step 101: 38700 + 387 = 39087
Step 102: 39087 + 387 = 39474
Step 103: 39474 + 387 = 39861
Step 104: 39861 + 387 = 40248
Step 105: 40248 + 387 = 40635
Step 106: 40635 + 387 = 41022
Step 107: 41022 + 387 = 41409
Step 108: 41409 + 387 = 41796
Step 109: 41796 + 387 = 42183
Step 110: 42183 + 387 = 42570
Step 111: 42570 + 387 = 42957
Step 112: 42957 + 387 = 43344
Step 113: 43344 + 387 = 43731
Step 114: 43731 + 387 = 44118
Step 115: 44118 + 387 = 44505
Step 116: 44505 + 387 = 44892
Step 117: 44892 + 387 = 45279
Step 118: 45279 + 387 = 45666
Step 119: 45666 + 387 = 46053
Step 120: 46053 + 387 = 46440
Step 121: 46440 + 387 = 46827
Step 122: 46827 + 387 = 47214
Step 123: 47214 + 387 = 47601
Step 124: 47601 + 387 = 47988
Step 125: 47988 + 387 = 48375
Step 126: 48375 + 387 = 48762
Step 127: 48762 + 387 = 49149
Step 128: 49149 + 387 = 49536
Step 129: 49536 + 387 = 49923
Step 130: 49923 + 387 = 50310
Step 131: 50310 + 387 = 50697

So, 387*131 = 50697