Alright, let's solve this math problem step by step. First, we have the number 285. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 155. So, we're going to take the number 285 and add it to itself 155 times.
Step 1: 0 + 285 = 285
Step 2: 285 + 285 = 570
Step 3: 570 + 285 = 855
Step 4: 855 + 285 = 1140
Step 5: 1140 + 285 = 1425
Step 6: 1425 + 285 = 1710
Step 7: 1710 + 285 = 1995
Step 8: 1995 + 285 = 2280
Step 9: 2280 + 285 = 2565
Step 10: 2565 + 285 = 2850
Step 11: 2850 + 285 = 3135
Step 12: 3135 + 285 = 3420
Step 13: 3420 + 285 = 3705
Step 14: 3705 + 285 = 3990
Step 15: 3990 + 285 = 4275
Step 16: 4275 + 285 = 4560
Step 17: 4560 + 285 = 4845
Step 18: 4845 + 285 = 5130
Step 19: 5130 + 285 = 5415
Step 20: 5415 + 285 = 5700
Step 21: 5700 + 285 = 5985
Step 22: 5985 + 285 = 6270
Step 23: 6270 + 285 = 6555
Step 24: 6555 + 285 = 6840
Step 25: 6840 + 285 = 7125
Step 26: 7125 + 285 = 7410
Step 27: 7410 + 285 = 7695
Step 28: 7695 + 285 = 7980
Step 29: 7980 + 285 = 8265
Step 30: 8265 + 285 = 8550
Step 31: 8550 + 285 = 8835
Step 32: 8835 + 285 = 9120
Step 33: 9120 + 285 = 9405
Step 34: 9405 + 285 = 9690
Step 35: 9690 + 285 = 9975
Step 36: 9975 + 285 = 10260
Step 37: 10260 + 285 = 10545
Step 38: 10545 + 285 = 10830
Step 39: 10830 + 285 = 11115
Step 40: 11115 + 285 = 11400
Step 41: 11400 + 285 = 11685
Step 42: 11685 + 285 = 11970
Step 43: 11970 + 285 = 12255
Step 44: 12255 + 285 = 12540
Step 45: 12540 + 285 = 12825
Step 46: 12825 + 285 = 13110
Step 47: 13110 + 285 = 13395
Step 48: 13395 + 285 = 13680
Step 49: 13680 + 285 = 13965
Step 50: 13965 + 285 = 14250
Step 51: 14250 + 285 = 14535
Step 52: 14535 + 285 = 14820
Step 53: 14820 + 285 = 15105
Step 54: 15105 + 285 = 15390
Step 55: 15390 + 285 = 15675
Step 56: 15675 + 285 = 15960
Step 57: 15960 + 285 = 16245
Step 58: 16245 + 285 = 16530
Step 59: 16530 + 285 = 16815
Step 60: 16815 + 285 = 17100
Step 61: 17100 + 285 = 17385
Step 62: 17385 + 285 = 17670
Step 63: 17670 + 285 = 17955
Step 64: 17955 + 285 = 18240
Step 65: 18240 + 285 = 18525
Step 66: 18525 + 285 = 18810
Step 67: 18810 + 285 = 19095
Step 68: 19095 + 285 = 19380
Step 69: 19380 + 285 = 19665
Step 70: 19665 + 285 = 19950
Step 71: 19950 + 285 = 20235
Step 72: 20235 + 285 = 20520
Step 73: 20520 + 285 = 20805
Step 74: 20805 + 285 = 21090
Step 75: 21090 + 285 = 21375
Step 76: 21375 + 285 = 21660
Step 77: 21660 + 285 = 21945
Step 78: 21945 + 285 = 22230
Step 79: 22230 + 285 = 22515
Step 80: 22515 + 285 = 22800
Step 81: 22800 + 285 = 23085
Step 82: 23085 + 285 = 23370
Step 83: 23370 + 285 = 23655
Step 84: 23655 + 285 = 23940
Step 85: 23940 + 285 = 24225
Step 86: 24225 + 285 = 24510
Step 87: 24510 + 285 = 24795
Step 88: 24795 + 285 = 25080
Step 89: 25080 + 285 = 25365
Step 90: 25365 + 285 = 25650
Step 91: 25650 + 285 = 25935
Step 92: 25935 + 285 = 26220
Step 93: 26220 + 285 = 26505
Step 94: 26505 + 285 = 26790
Step 95: 26790 + 285 = 27075
Step 96: 27075 + 285 = 27360
Step 97: 27360 + 285 = 27645
Step 98: 27645 + 285 = 27930
Step 99: 27930 + 285 = 28215
Step 100: 28215 + 285 = 28500
Step 101: 28500 + 285 = 28785
Step 102: 28785 + 285 = 29070
Step 103: 29070 + 285 = 29355
Step 104: 29355 + 285 = 29640
Step 105: 29640 + 285 = 29925
Step 106: 29925 + 285 = 30210
Step 107: 30210 + 285 = 30495
Step 108: 30495 + 285 = 30780
Step 109: 30780 + 285 = 31065
Step 110: 31065 + 285 = 31350
Step 111: 31350 + 285 = 31635
Step 112: 31635 + 285 = 31920
Step 113: 31920 + 285 = 32205
Step 114: 32205 + 285 = 32490
Step 115: 32490 + 285 = 32775
Step 116: 32775 + 285 = 33060
Step 117: 33060 + 285 = 33345
Step 118: 33345 + 285 = 33630
Step 119: 33630 + 285 = 33915
Step 120: 33915 + 285 = 34200
Step 121: 34200 + 285 = 34485
Step 122: 34485 + 285 = 34770
Step 123: 34770 + 285 = 35055
Step 124: 35055 + 285 = 35340
Step 125: 35340 + 285 = 35625
Step 126: 35625 + 285 = 35910
Step 127: 35910 + 285 = 36195
Step 128: 36195 + 285 = 36480
Step 129: 36480 + 285 = 36765
Step 130: 36765 + 285 = 37050
Step 131: 37050 + 285 = 37335
Step 132: 37335 + 285 = 37620
Step 133: 37620 + 285 = 37905
Step 134: 37905 + 285 = 38190
Step 135: 38190 + 285 = 38475
Step 136: 38475 + 285 = 38760
Step 137: 38760 + 285 = 39045
Step 138: 39045 + 285 = 39330
Step 139: 39330 + 285 = 39615
Step 140: 39615 + 285 = 39900
Step 141: 39900 + 285 = 40185
Step 142: 40185 + 285 = 40470
Step 143: 40470 + 285 = 40755
Step 144: 40755 + 285 = 41040
Step 145: 41040 + 285 = 41325
Step 146: 41325 + 285 = 41610
Step 147: 41610 + 285 = 41895
Step 148: 41895 + 285 = 42180
Step 149: 42180 + 285 = 42465
Step 150: 42465 + 285 = 42750
Step 151: 42750 + 285 = 43035
Step 152: 43035 + 285 = 43320
Step 153: 43320 + 285 = 43605
Step 154: 43605 + 285 = 43890
Step 155: 43890 + 285 = 44175

So, 285*155 = 44175