Alright, let's solve this math problem step by step. First, we have the number 805. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 154. So, we're going to take the number 805 and add it to itself 154 times.
Step 1: 0 + 805 = 805
Step 2: 805 + 805 = 1610
Step 3: 1610 + 805 = 2415
Step 4: 2415 + 805 = 3220
Step 5: 3220 + 805 = 4025
Step 6: 4025 + 805 = 4830
Step 7: 4830 + 805 = 5635
Step 8: 5635 + 805 = 6440
Step 9: 6440 + 805 = 7245
Step 10: 7245 + 805 = 8050
Step 11: 8050 + 805 = 8855
Step 12: 8855 + 805 = 9660
Step 13: 9660 + 805 = 10465
Step 14: 10465 + 805 = 11270
Step 15: 11270 + 805 = 12075
Step 16: 12075 + 805 = 12880
Step 17: 12880 + 805 = 13685
Step 18: 13685 + 805 = 14490
Step 19: 14490 + 805 = 15295
Step 20: 15295 + 805 = 16100
Step 21: 16100 + 805 = 16905
Step 22: 16905 + 805 = 17710
Step 23: 17710 + 805 = 18515
Step 24: 18515 + 805 = 19320
Step 25: 19320 + 805 = 20125
Step 26: 20125 + 805 = 20930
Step 27: 20930 + 805 = 21735
Step 28: 21735 + 805 = 22540
Step 29: 22540 + 805 = 23345
Step 30: 23345 + 805 = 24150
Step 31: 24150 + 805 = 24955
Step 32: 24955 + 805 = 25760
Step 33: 25760 + 805 = 26565
Step 34: 26565 + 805 = 27370
Step 35: 27370 + 805 = 28175
Step 36: 28175 + 805 = 28980
Step 37: 28980 + 805 = 29785
Step 38: 29785 + 805 = 30590
Step 39: 30590 + 805 = 31395
Step 40: 31395 + 805 = 32200
Step 41: 32200 + 805 = 33005
Step 42: 33005 + 805 = 33810
Step 43: 33810 + 805 = 34615
Step 44: 34615 + 805 = 35420
Step 45: 35420 + 805 = 36225
Step 46: 36225 + 805 = 37030
Step 47: 37030 + 805 = 37835
Step 48: 37835 + 805 = 38640
Step 49: 38640 + 805 = 39445
Step 50: 39445 + 805 = 40250
Step 51: 40250 + 805 = 41055
Step 52: 41055 + 805 = 41860
Step 53: 41860 + 805 = 42665
Step 54: 42665 + 805 = 43470
Step 55: 43470 + 805 = 44275
Step 56: 44275 + 805 = 45080
Step 57: 45080 + 805 = 45885
Step 58: 45885 + 805 = 46690
Step 59: 46690 + 805 = 47495
Step 60: 47495 + 805 = 48300
Step 61: 48300 + 805 = 49105
Step 62: 49105 + 805 = 49910
Step 63: 49910 + 805 = 50715
Step 64: 50715 + 805 = 51520
Step 65: 51520 + 805 = 52325
Step 66: 52325 + 805 = 53130
Step 67: 53130 + 805 = 53935
Step 68: 53935 + 805 = 54740
Step 69: 54740 + 805 = 55545
Step 70: 55545 + 805 = 56350
Step 71: 56350 + 805 = 57155
Step 72: 57155 + 805 = 57960
Step 73: 57960 + 805 = 58765
Step 74: 58765 + 805 = 59570
Step 75: 59570 + 805 = 60375
Step 76: 60375 + 805 = 61180
Step 77: 61180 + 805 = 61985
Step 78: 61985 + 805 = 62790
Step 79: 62790 + 805 = 63595
Step 80: 63595 + 805 = 64400
Step 81: 64400 + 805 = 65205
Step 82: 65205 + 805 = 66010
Step 83: 66010 + 805 = 66815
Step 84: 66815 + 805 = 67620
Step 85: 67620 + 805 = 68425
Step 86: 68425 + 805 = 69230
Step 87: 69230 + 805 = 70035
Step 88: 70035 + 805 = 70840
Step 89: 70840 + 805 = 71645
Step 90: 71645 + 805 = 72450
Step 91: 72450 + 805 = 73255
Step 92: 73255 + 805 = 74060
Step 93: 74060 + 805 = 74865
Step 94: 74865 + 805 = 75670
Step 95: 75670 + 805 = 76475
Step 96: 76475 + 805 = 77280
Step 97: 77280 + 805 = 78085
Step 98: 78085 + 805 = 78890
Step 99: 78890 + 805 = 79695
Step 100: 79695 + 805 = 80500
Step 101: 80500 + 805 = 81305
Step 102: 81305 + 805 = 82110
Step 103: 82110 + 805 = 82915
Step 104: 82915 + 805 = 83720
Step 105: 83720 + 805 = 84525
Step 106: 84525 + 805 = 85330
Step 107: 85330 + 805 = 86135
Step 108: 86135 + 805 = 86940
Step 109: 86940 + 805 = 87745
Step 110: 87745 + 805 = 88550
Step 111: 88550 + 805 = 89355
Step 112: 89355 + 805 = 90160
Step 113: 90160 + 805 = 90965
Step 114: 90965 + 805 = 91770
Step 115: 91770 + 805 = 92575
Step 116: 92575 + 805 = 93380
Step 117: 93380 + 805 = 94185
Step 118: 94185 + 805 = 94990
Step 119: 94990 + 805 = 95795
Step 120: 95795 + 805 = 96600
Step 121: 96600 + 805 = 97405
Step 122: 97405 + 805 = 98210
Step 123: 98210 + 805 = 99015
Step 124: 99015 + 805 = 99820
Step 125: 99820 + 805 = 100625
Step 126: 100625 + 805 = 101430
Step 127: 101430 + 805 = 102235
Step 128: 102235 + 805 = 103040
Step 129: 103040 + 805 = 103845
Step 130: 103845 + 805 = 104650
Step 131: 104650 + 805 = 105455
Step 132: 105455 + 805 = 106260
Step 133: 106260 + 805 = 107065
Step 134: 107065 + 805 = 107870
Step 135: 107870 + 805 = 108675
Step 136: 108675 + 805 = 109480
Step 137: 109480 + 805 = 110285
Step 138: 110285 + 805 = 111090
Step 139: 111090 + 805 = 111895
Step 140: 111895 + 805 = 112700
Step 141: 112700 + 805 = 113505
Step 142: 113505 + 805 = 114310
Step 143: 114310 + 805 = 115115
Step 144: 115115 + 805 = 115920
Step 145: 115920 + 805 = 116725
Step 146: 116725 + 805 = 117530
Step 147: 117530 + 805 = 118335
Step 148: 118335 + 805 = 119140
Step 149: 119140 + 805 = 119945
Step 150: 119945 + 805 = 120750
Step 151: 120750 + 805 = 121555
Step 152: 121555 + 805 = 122360
Step 153: 122360 + 805 = 123165
Step 154: 123165 + 805 = 123970

So, 805*154 = 123970