Alright, let's solve this math problem step by step. First, we have the number 91. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 151. So, we're going to take the number 91 and add it to itself 151 times.
Step 1: 0 + 91 = 91
Step 2: 91 + 91 = 182
Step 3: 182 + 91 = 273
Step 4: 273 + 91 = 364
Step 5: 364 + 91 = 455
Step 6: 455 + 91 = 546
Step 7: 546 + 91 = 637
Step 8: 637 + 91 = 728
Step 9: 728 + 91 = 819
Step 10: 819 + 91 = 910
Step 11: 910 + 91 = 1001
Step 12: 1001 + 91 = 1092
Step 13: 1092 + 91 = 1183
Step 14: 1183 + 91 = 1274
Step 15: 1274 + 91 = 1365
Step 16: 1365 + 91 = 1456
Step 17: 1456 + 91 = 1547
Step 18: 1547 + 91 = 1638
Step 19: 1638 + 91 = 1729
Step 20: 1729 + 91 = 1820
Step 21: 1820 + 91 = 1911
Step 22: 1911 + 91 = 2002
Step 23: 2002 + 91 = 2093
Step 24: 2093 + 91 = 2184
Step 25: 2184 + 91 = 2275
Step 26: 2275 + 91 = 2366
Step 27: 2366 + 91 = 2457
Step 28: 2457 + 91 = 2548
Step 29: 2548 + 91 = 2639
Step 30: 2639 + 91 = 2730
Step 31: 2730 + 91 = 2821
Step 32: 2821 + 91 = 2912
Step 33: 2912 + 91 = 3003
Step 34: 3003 + 91 = 3094
Step 35: 3094 + 91 = 3185
Step 36: 3185 + 91 = 3276
Step 37: 3276 + 91 = 3367
Step 38: 3367 + 91 = 3458
Step 39: 3458 + 91 = 3549
Step 40: 3549 + 91 = 3640
Step 41: 3640 + 91 = 3731
Step 42: 3731 + 91 = 3822
Step 43: 3822 + 91 = 3913
Step 44: 3913 + 91 = 4004
Step 45: 4004 + 91 = 4095
Step 46: 4095 + 91 = 4186
Step 47: 4186 + 91 = 4277
Step 48: 4277 + 91 = 4368
Step 49: 4368 + 91 = 4459
Step 50: 4459 + 91 = 4550
Step 51: 4550 + 91 = 4641
Step 52: 4641 + 91 = 4732
Step 53: 4732 + 91 = 4823
Step 54: 4823 + 91 = 4914
Step 55: 4914 + 91 = 5005
Step 56: 5005 + 91 = 5096
Step 57: 5096 + 91 = 5187
Step 58: 5187 + 91 = 5278
Step 59: 5278 + 91 = 5369
Step 60: 5369 + 91 = 5460
Step 61: 5460 + 91 = 5551
Step 62: 5551 + 91 = 5642
Step 63: 5642 + 91 = 5733
Step 64: 5733 + 91 = 5824
Step 65: 5824 + 91 = 5915
Step 66: 5915 + 91 = 6006
Step 67: 6006 + 91 = 6097
Step 68: 6097 + 91 = 6188
Step 69: 6188 + 91 = 6279
Step 70: 6279 + 91 = 6370
Step 71: 6370 + 91 = 6461
Step 72: 6461 + 91 = 6552
Step 73: 6552 + 91 = 6643
Step 74: 6643 + 91 = 6734
Step 75: 6734 + 91 = 6825
Step 76: 6825 + 91 = 6916
Step 77: 6916 + 91 = 7007
Step 78: 7007 + 91 = 7098
Step 79: 7098 + 91 = 7189
Step 80: 7189 + 91 = 7280
Step 81: 7280 + 91 = 7371
Step 82: 7371 + 91 = 7462
Step 83: 7462 + 91 = 7553
Step 84: 7553 + 91 = 7644
Step 85: 7644 + 91 = 7735
Step 86: 7735 + 91 = 7826
Step 87: 7826 + 91 = 7917
Step 88: 7917 + 91 = 8008
Step 89: 8008 + 91 = 8099
Step 90: 8099 + 91 = 8190
Step 91: 8190 + 91 = 8281
Step 92: 8281 + 91 = 8372
Step 93: 8372 + 91 = 8463
Step 94: 8463 + 91 = 8554
Step 95: 8554 + 91 = 8645
Step 96: 8645 + 91 = 8736
Step 97: 8736 + 91 = 8827
Step 98: 8827 + 91 = 8918
Step 99: 8918 + 91 = 9009
Step 100: 9009 + 91 = 9100
Step 101: 9100 + 91 = 9191
Step 102: 9191 + 91 = 9282
Step 103: 9282 + 91 = 9373
Step 104: 9373 + 91 = 9464
Step 105: 9464 + 91 = 9555
Step 106: 9555 + 91 = 9646
Step 107: 9646 + 91 = 9737
Step 108: 9737 + 91 = 9828
Step 109: 9828 + 91 = 9919
Step 110: 9919 + 91 = 10010
Step 111: 10010 + 91 = 10101
Step 112: 10101 + 91 = 10192
Step 113: 10192 + 91 = 10283
Step 114: 10283 + 91 = 10374
Step 115: 10374 + 91 = 10465
Step 116: 10465 + 91 = 10556
Step 117: 10556 + 91 = 10647
Step 118: 10647 + 91 = 10738
Step 119: 10738 + 91 = 10829
Step 120: 10829 + 91 = 10920
Step 121: 10920 + 91 = 11011
Step 122: 11011 + 91 = 11102
Step 123: 11102 + 91 = 11193
Step 124: 11193 + 91 = 11284
Step 125: 11284 + 91 = 11375
Step 126: 11375 + 91 = 11466
Step 127: 11466 + 91 = 11557
Step 128: 11557 + 91 = 11648
Step 129: 11648 + 91 = 11739
Step 130: 11739 + 91 = 11830
Step 131: 11830 + 91 = 11921
Step 132: 11921 + 91 = 12012
Step 133: 12012 + 91 = 12103
Step 134: 12103 + 91 = 12194
Step 135: 12194 + 91 = 12285
Step 136: 12285 + 91 = 12376
Step 137: 12376 + 91 = 12467
Step 138: 12467 + 91 = 12558
Step 139: 12558 + 91 = 12649
Step 140: 12649 + 91 = 12740
Step 141: 12740 + 91 = 12831
Step 142: 12831 + 91 = 12922
Step 143: 12922 + 91 = 13013
Step 144: 13013 + 91 = 13104
Step 145: 13104 + 91 = 13195
Step 146: 13195 + 91 = 13286
Step 147: 13286 + 91 = 13377
Step 148: 13377 + 91 = 13468
Step 149: 13468 + 91 = 13559
Step 150: 13559 + 91 = 13650
Step 151: 13650 + 91 = 13741

So, 91*151 = 13741