Alright, let's solve this math problem step by step. First, we have the number 945. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 171. So, we're going to take the number 945 and add it to itself 171 times.
Step 1: 0 + 945 = 945
Step 2: 945 + 945 = 1890
Step 3: 1890 + 945 = 2835
Step 4: 2835 + 945 = 3780
Step 5: 3780 + 945 = 4725
Step 6: 4725 + 945 = 5670
Step 7: 5670 + 945 = 6615
Step 8: 6615 + 945 = 7560
Step 9: 7560 + 945 = 8505
Step 10: 8505 + 945 = 9450
Step 11: 9450 + 945 = 10395
Step 12: 10395 + 945 = 11340
Step 13: 11340 + 945 = 12285
Step 14: 12285 + 945 = 13230
Step 15: 13230 + 945 = 14175
Step 16: 14175 + 945 = 15120
Step 17: 15120 + 945 = 16065
Step 18: 16065 + 945 = 17010
Step 19: 17010 + 945 = 17955
Step 20: 17955 + 945 = 18900
Step 21: 18900 + 945 = 19845
Step 22: 19845 + 945 = 20790
Step 23: 20790 + 945 = 21735
Step 24: 21735 + 945 = 22680
Step 25: 22680 + 945 = 23625
Step 26: 23625 + 945 = 24570
Step 27: 24570 + 945 = 25515
Step 28: 25515 + 945 = 26460
Step 29: 26460 + 945 = 27405
Step 30: 27405 + 945 = 28350
Step 31: 28350 + 945 = 29295
Step 32: 29295 + 945 = 30240
Step 33: 30240 + 945 = 31185
Step 34: 31185 + 945 = 32130
Step 35: 32130 + 945 = 33075
Step 36: 33075 + 945 = 34020
Step 37: 34020 + 945 = 34965
Step 38: 34965 + 945 = 35910
Step 39: 35910 + 945 = 36855
Step 40: 36855 + 945 = 37800
Step 41: 37800 + 945 = 38745
Step 42: 38745 + 945 = 39690
Step 43: 39690 + 945 = 40635
Step 44: 40635 + 945 = 41580
Step 45: 41580 + 945 = 42525
Step 46: 42525 + 945 = 43470
Step 47: 43470 + 945 = 44415
Step 48: 44415 + 945 = 45360
Step 49: 45360 + 945 = 46305
Step 50: 46305 + 945 = 47250
Step 51: 47250 + 945 = 48195
Step 52: 48195 + 945 = 49140
Step 53: 49140 + 945 = 50085
Step 54: 50085 + 945 = 51030
Step 55: 51030 + 945 = 51975
Step 56: 51975 + 945 = 52920
Step 57: 52920 + 945 = 53865
Step 58: 53865 + 945 = 54810
Step 59: 54810 + 945 = 55755
Step 60: 55755 + 945 = 56700
Step 61: 56700 + 945 = 57645
Step 62: 57645 + 945 = 58590
Step 63: 58590 + 945 = 59535
Step 64: 59535 + 945 = 60480
Step 65: 60480 + 945 = 61425
Step 66: 61425 + 945 = 62370
Step 67: 62370 + 945 = 63315
Step 68: 63315 + 945 = 64260
Step 69: 64260 + 945 = 65205
Step 70: 65205 + 945 = 66150
Step 71: 66150 + 945 = 67095
Step 72: 67095 + 945 = 68040
Step 73: 68040 + 945 = 68985
Step 74: 68985 + 945 = 69930
Step 75: 69930 + 945 = 70875
Step 76: 70875 + 945 = 71820
Step 77: 71820 + 945 = 72765
Step 78: 72765 + 945 = 73710
Step 79: 73710 + 945 = 74655
Step 80: 74655 + 945 = 75600
Step 81: 75600 + 945 = 76545
Step 82: 76545 + 945 = 77490
Step 83: 77490 + 945 = 78435
Step 84: 78435 + 945 = 79380
Step 85: 79380 + 945 = 80325
Step 86: 80325 + 945 = 81270
Step 87: 81270 + 945 = 82215
Step 88: 82215 + 945 = 83160
Step 89: 83160 + 945 = 84105
Step 90: 84105 + 945 = 85050
Step 91: 85050 + 945 = 85995
Step 92: 85995 + 945 = 86940
Step 93: 86940 + 945 = 87885
Step 94: 87885 + 945 = 88830
Step 95: 88830 + 945 = 89775
Step 96: 89775 + 945 = 90720
Step 97: 90720 + 945 = 91665
Step 98: 91665 + 945 = 92610
Step 99: 92610 + 945 = 93555
Step 100: 93555 + 945 = 94500
Step 101: 94500 + 945 = 95445
Step 102: 95445 + 945 = 96390
Step 103: 96390 + 945 = 97335
Step 104: 97335 + 945 = 98280
Step 105: 98280 + 945 = 99225
Step 106: 99225 + 945 = 100170
Step 107: 100170 + 945 = 101115
Step 108: 101115 + 945 = 102060
Step 109: 102060 + 945 = 103005
Step 110: 103005 + 945 = 103950
Step 111: 103950 + 945 = 104895
Step 112: 104895 + 945 = 105840
Step 113: 105840 + 945 = 106785
Step 114: 106785 + 945 = 107730
Step 115: 107730 + 945 = 108675
Step 116: 108675 + 945 = 109620
Step 117: 109620 + 945 = 110565
Step 118: 110565 + 945 = 111510
Step 119: 111510 + 945 = 112455
Step 120: 112455 + 945 = 113400
Step 121: 113400 + 945 = 114345
Step 122: 114345 + 945 = 115290
Step 123: 115290 + 945 = 116235
Step 124: 116235 + 945 = 117180
Step 125: 117180 + 945 = 118125
Step 126: 118125 + 945 = 119070
Step 127: 119070 + 945 = 120015
Step 128: 120015 + 945 = 120960
Step 129: 120960 + 945 = 121905
Step 130: 121905 + 945 = 122850
Step 131: 122850 + 945 = 123795
Step 132: 123795 + 945 = 124740
Step 133: 124740 + 945 = 125685
Step 134: 125685 + 945 = 126630
Step 135: 126630 + 945 = 127575
Step 136: 127575 + 945 = 128520
Step 137: 128520 + 945 = 129465
Step 138: 129465 + 945 = 130410
Step 139: 130410 + 945 = 131355
Step 140: 131355 + 945 = 132300
Step 141: 132300 + 945 = 133245
Step 142: 133245 + 945 = 134190
Step 143: 134190 + 945 = 135135
Step 144: 135135 + 945 = 136080
Step 145: 136080 + 945 = 137025
Step 146: 137025 + 945 = 137970
Step 147: 137970 + 945 = 138915
Step 148: 138915 + 945 = 139860
Step 149: 139860 + 945 = 140805
Step 150: 140805 + 945 = 141750
Step 151: 141750 + 945 = 142695
Step 152: 142695 + 945 = 143640
Step 153: 143640 + 945 = 144585
Step 154: 144585 + 945 = 145530
Step 155: 145530 + 945 = 146475
Step 156: 146475 + 945 = 147420
Step 157: 147420 + 945 = 148365
Step 158: 148365 + 945 = 149310
Step 159: 149310 + 945 = 150255
Step 160: 150255 + 945 = 151200
Step 161: 151200 + 945 = 152145
Step 162: 152145 + 945 = 153090
Step 163: 153090 + 945 = 154035
Step 164: 154035 + 945 = 154980
Step 165: 154980 + 945 = 155925
Step 166: 155925 + 945 = 156870
Step 167: 156870 + 945 = 157815
Step 168: 157815 + 945 = 158760
Step 169: 158760 + 945 = 159705
Step 170: 159705 + 945 = 160650
Step 171: 160650 + 945 = 161595

So, 945*171 = 161595