OK, let's work through this together. We're starting with 191 and we're going to multiply it by 87, which means we add 191 to itself 87 times.
Step 1: 0 + 191 = 191
Step 2: 191 + 191 = 382
Step 3: 382 + 191 = 573
Step 4: 573 + 191 = 764
Step 5: 764 + 191 = 955
Step 6: 955 + 191 = 1146
Step 7: 1146 + 191 = 1337
Step 8: 1337 + 191 = 1528
Step 9: 1528 + 191 = 1719
Step 10: 1719 + 191 = 1910
Step 11: 1910 + 191 = 2101
Step 12: 2101 + 191 = 2292
Step 13: 2292 + 191 = 2483
Step 14: 2483 + 191 = 2674
Step 15: 2674 + 191 = 2865
Step 16: 2865 + 191 = 3056
Step 17: 3056 + 191 = 3247
Step 18: 3247 + 191 = 3438
Step 19: 3438 + 191 = 3629
Step 20: 3629 + 191 = 3820
Step 21: 3820 + 191 = 4011
Step 22: 4011 + 191 = 4202
Step 23: 4202 + 191 = 4393
Step 24: 4393 + 191 = 4584
Step 25: 4584 + 191 = 4775
Step 26: 4775 + 191 = 4966
Step 27: 4966 + 191 = 5157
Step 28: 5157 + 191 = 5348
Step 29: 5348 + 191 = 5539
Step 30: 5539 + 191 = 5730
Step 31: 5730 + 191 = 5921
Step 32: 5921 + 191 = 6112
Step 33: 6112 + 191 = 6303
Step 34: 6303 + 191 = 6494
Step 35: 6494 + 191 = 6685
Step 36: 6685 + 191 = 6876
Step 37: 6876 + 191 = 7067
Step 38: 7067 + 191 = 7258
Step 39: 7258 + 191 = 7449
Step 40: 7449 + 191 = 7640
Step 41: 7640 + 191 = 7831
Step 42: 7831 + 191 = 8022
Step 43: 8022 + 191 = 8213
Step 44: 8213 + 191 = 8404
Step 45: 8404 + 191 = 8595
Step 46: 8595 + 191 = 8786
Step 47: 8786 + 191 = 8977
Step 48: 8977 + 191 = 9168
Step 49: 9168 + 191 = 9359
Step 50: 9359 + 191 = 9550
Step 51: 9550 + 191 = 9741
Step 52: 9741 + 191 = 9932
Step 53: 9932 + 191 = 10123
Step 54: 10123 + 191 = 10314
Step 55: 10314 + 191 = 10505
Step 56: 10505 + 191 = 10696
Step 57: 10696 + 191 = 10887
Step 58: 10887 + 191 = 11078
Step 59: 11078 + 191 = 11269
Step 60: 11269 + 191 = 11460
Step 61: 11460 + 191 = 11651
Step 62: 11651 + 191 = 11842
Step 63: 11842 + 191 = 12033
Step 64: 12033 + 191 = 12224
Step 65: 12224 + 191 = 12415
Step 66: 12415 + 191 = 12606
Step 67: 12606 + 191 = 12797
Step 68: 12797 + 191 = 12988
Step 69: 12988 + 191 = 13179
Step 70: 13179 + 191 = 13370
Step 71: 13370 + 191 = 13561
Step 72: 13561 + 191 = 13752
Step 73: 13752 + 191 = 13943
Step 74: 13943 + 191 = 14134
Step 75: 14134 + 191 = 14325
Step 76: 14325 + 191 = 14516
Step 77: 14516 + 191 = 14707
Step 78: 14707 + 191 = 14898
Step 79: 14898 + 191 = 15089
Step 80: 15089 + 191 = 15280
Step 81: 15280 + 191 = 15471
Step 82: 15471 + 191 = 15662
Step 83: 15662 + 191 = 15853
Step 84: 15853 + 191 = 16044
Step 85: 16044 + 191 = 16235
Step 86: 16235 + 191 = 16426
Step 87: 16426 + 191 = 16617

So, 191*87 = 16617