Alright, let's solve this math problem step by step. First, we have the number 450. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 161. So, we're going to take the number 450 and add it to itself 161 times.
Step 1: 0 + 450 = 450
Step 2: 450 + 450 = 900
Step 3: 900 + 450 = 1350
Step 4: 1350 + 450 = 1800
Step 5: 1800 + 450 = 2250
Step 6: 2250 + 450 = 2700
Step 7: 2700 + 450 = 3150
Step 8: 3150 + 450 = 3600
Step 9: 3600 + 450 = 4050
Step 10: 4050 + 450 = 4500
Step 11: 4500 + 450 = 4950
Step 12: 4950 + 450 = 5400
Step 13: 5400 + 450 = 5850
Step 14: 5850 + 450 = 6300
Step 15: 6300 + 450 = 6750
Step 16: 6750 + 450 = 7200
Step 17: 7200 + 450 = 7650
Step 18: 7650 + 450 = 8100
Step 19: 8100 + 450 = 8550
Step 20: 8550 + 450 = 9000
Step 21: 9000 + 450 = 9450
Step 22: 9450 + 450 = 9900
Step 23: 9900 + 450 = 10350
Step 24: 10350 + 450 = 10800
Step 25: 10800 + 450 = 11250
Step 26: 11250 + 450 = 11700
Step 27: 11700 + 450 = 12150
Step 28: 12150 + 450 = 12600
Step 29: 12600 + 450 = 13050
Step 30: 13050 + 450 = 13500
Step 31: 13500 + 450 = 13950
Step 32: 13950 + 450 = 14400
Step 33: 14400 + 450 = 14850
Step 34: 14850 + 450 = 15300
Step 35: 15300 + 450 = 15750
Step 36: 15750 + 450 = 16200
Step 37: 16200 + 450 = 16650
Step 38: 16650 + 450 = 17100
Step 39: 17100 + 450 = 17550
Step 40: 17550 + 450 = 18000
Step 41: 18000 + 450 = 18450
Step 42: 18450 + 450 = 18900
Step 43: 18900 + 450 = 19350
Step 44: 19350 + 450 = 19800
Step 45: 19800 + 450 = 20250
Step 46: 20250 + 450 = 20700
Step 47: 20700 + 450 = 21150
Step 48: 21150 + 450 = 21600
Step 49: 21600 + 450 = 22050
Step 50: 22050 + 450 = 22500
Step 51: 22500 + 450 = 22950
Step 52: 22950 + 450 = 23400
Step 53: 23400 + 450 = 23850
Step 54: 23850 + 450 = 24300
Step 55: 24300 + 450 = 24750
Step 56: 24750 + 450 = 25200
Step 57: 25200 + 450 = 25650
Step 58: 25650 + 450 = 26100
Step 59: 26100 + 450 = 26550
Step 60: 26550 + 450 = 27000
Step 61: 27000 + 450 = 27450
Step 62: 27450 + 450 = 27900
Step 63: 27900 + 450 = 28350
Step 64: 28350 + 450 = 28800
Step 65: 28800 + 450 = 29250
Step 66: 29250 + 450 = 29700
Step 67: 29700 + 450 = 30150
Step 68: 30150 + 450 = 30600
Step 69: 30600 + 450 = 31050
Step 70: 31050 + 450 = 31500
Step 71: 31500 + 450 = 31950
Step 72: 31950 + 450 = 32400
Step 73: 32400 + 450 = 32850
Step 74: 32850 + 450 = 33300
Step 75: 33300 + 450 = 33750
Step 76: 33750 + 450 = 34200
Step 77: 34200 + 450 = 34650
Step 78: 34650 + 450 = 35100
Step 79: 35100 + 450 = 35550
Step 80: 35550 + 450 = 36000
Step 81: 36000 + 450 = 36450
Step 82: 36450 + 450 = 36900
Step 83: 36900 + 450 = 37350
Step 84: 37350 + 450 = 37800
Step 85: 37800 + 450 = 38250
Step 86: 38250 + 450 = 38700
Step 87: 38700 + 450 = 39150
Step 88: 39150 + 450 = 39600
Step 89: 39600 + 450 = 40050
Step 90: 40050 + 450 = 40500
Step 91: 40500 + 450 = 40950
Step 92: 40950 + 450 = 41400
Step 93: 41400 + 450 = 41850
Step 94: 41850 + 450 = 42300
Step 95: 42300 + 450 = 42750
Step 96: 42750 + 450 = 43200
Step 97: 43200 + 450 = 43650
Step 98: 43650 + 450 = 44100
Step 99: 44100 + 450 = 44550
Step 100: 44550 + 450 = 45000
Step 101: 45000 + 450 = 45450
Step 102: 45450 + 450 = 45900
Step 103: 45900 + 450 = 46350
Step 104: 46350 + 450 = 46800
Step 105: 46800 + 450 = 47250
Step 106: 47250 + 450 = 47700
Step 107: 47700 + 450 = 48150
Step 108: 48150 + 450 = 48600
Step 109: 48600 + 450 = 49050
Step 110: 49050 + 450 = 49500
Step 111: 49500 + 450 = 49950
Step 112: 49950 + 450 = 50400
Step 113: 50400 + 450 = 50850
Step 114: 50850 + 450 = 51300
Step 115: 51300 + 450 = 51750
Step 116: 51750 + 450 = 52200
Step 117: 52200 + 450 = 52650
Step 118: 52650 + 450 = 53100
Step 119: 53100 + 450 = 53550
Step 120: 53550 + 450 = 54000
Step 121: 54000 + 450 = 54450
Step 122: 54450 + 450 = 54900
Step 123: 54900 + 450 = 55350
Step 124: 55350 + 450 = 55800
Step 125: 55800 + 450 = 56250
Step 126: 56250 + 450 = 56700
Step 127: 56700 + 450 = 57150
Step 128: 57150 + 450 = 57600
Step 129: 57600 + 450 = 58050
Step 130: 58050 + 450 = 58500
Step 131: 58500 + 450 = 58950
Step 132: 58950 + 450 = 59400
Step 133: 59400 + 450 = 59850
Step 134: 59850 + 450 = 60300
Step 135: 60300 + 450 = 60750
Step 136: 60750 + 450 = 61200
Step 137: 61200 + 450 = 61650
Step 138: 61650 + 450 = 62100
Step 139: 62100 + 450 = 62550
Step 140: 62550 + 450 = 63000
Step 141: 63000 + 450 = 63450
Step 142: 63450 + 450 = 63900
Step 143: 63900 + 450 = 64350
Step 144: 64350 + 450 = 64800
Step 145: 64800 + 450 = 65250
Step 146: 65250 + 450 = 65700
Step 147: 65700 + 450 = 66150
Step 148: 66150 + 450 = 66600
Step 149: 66600 + 450 = 67050
Step 150: 67050 + 450 = 67500
Step 151: 67500 + 450 = 67950
Step 152: 67950 + 450 = 68400
Step 153: 68400 + 450 = 68850
Step 154: 68850 + 450 = 69300
Step 155: 69300 + 450 = 69750
Step 156: 69750 + 450 = 70200
Step 157: 70200 + 450 = 70650
Step 158: 70650 + 450 = 71100
Step 159: 71100 + 450 = 71550
Step 160: 71550 + 450 = 72000
Step 161: 72000 + 450 = 72450

So, 450*161 = 72450