Let's get this math done. We have 416 and we're going to multiply it by 171. This is the same as taking 416 and adding it to itself 171 times.
Step 1: 0 + 416 = 416
Step 2: 416 + 416 = 832
Step 3: 832 + 416 = 1248
Step 4: 1248 + 416 = 1664
Step 5: 1664 + 416 = 2080
Step 6: 2080 + 416 = 2496
Step 7: 2496 + 416 = 2912
Step 8: 2912 + 416 = 3328
Step 9: 3328 + 416 = 3744
Step 10: 3744 + 416 = 4160
Step 11: 4160 + 416 = 4576
Step 12: 4576 + 416 = 4992
Step 13: 4992 + 416 = 5408
Step 14: 5408 + 416 = 5824
Step 15: 5824 + 416 = 6240
Step 16: 6240 + 416 = 6656
Step 17: 6656 + 416 = 7072
Step 18: 7072 + 416 = 7488
Step 19: 7488 + 416 = 7904
Step 20: 7904 + 416 = 8320
Step 21: 8320 + 416 = 8736
Step 22: 8736 + 416 = 9152
Step 23: 9152 + 416 = 9568
Step 24: 9568 + 416 = 9984
Step 25: 9984 + 416 = 10400
Step 26: 10400 + 416 = 10816
Step 27: 10816 + 416 = 11232
Step 28: 11232 + 416 = 11648
Step 29: 11648 + 416 = 12064
Step 30: 12064 + 416 = 12480
Step 31: 12480 + 416 = 12896
Step 32: 12896 + 416 = 13312
Step 33: 13312 + 416 = 13728
Step 34: 13728 + 416 = 14144
Step 35: 14144 + 416 = 14560
Step 36: 14560 + 416 = 14976
Step 37: 14976 + 416 = 15392
Step 38: 15392 + 416 = 15808
Step 39: 15808 + 416 = 16224
Step 40: 16224 + 416 = 16640
Step 41: 16640 + 416 = 17056
Step 42: 17056 + 416 = 17472
Step 43: 17472 + 416 = 17888
Step 44: 17888 + 416 = 18304
Step 45: 18304 + 416 = 18720
Step 46: 18720 + 416 = 19136
Step 47: 19136 + 416 = 19552
Step 48: 19552 + 416 = 19968
Step 49: 19968 + 416 = 20384
Step 50: 20384 + 416 = 20800
Step 51: 20800 + 416 = 21216
Step 52: 21216 + 416 = 21632
Step 53: 21632 + 416 = 22048
Step 54: 22048 + 416 = 22464
Step 55: 22464 + 416 = 22880
Step 56: 22880 + 416 = 23296
Step 57: 23296 + 416 = 23712
Step 58: 23712 + 416 = 24128
Step 59: 24128 + 416 = 24544
Step 60: 24544 + 416 = 24960
Step 61: 24960 + 416 = 25376
Step 62: 25376 + 416 = 25792
Step 63: 25792 + 416 = 26208
Step 64: 26208 + 416 = 26624
Step 65: 26624 + 416 = 27040
Step 66: 27040 + 416 = 27456
Step 67: 27456 + 416 = 27872
Step 68: 27872 + 416 = 28288
Step 69: 28288 + 416 = 28704
Step 70: 28704 + 416 = 29120
Step 71: 29120 + 416 = 29536
Step 72: 29536 + 416 = 29952
Step 73: 29952 + 416 = 30368
Step 74: 30368 + 416 = 30784
Step 75: 30784 + 416 = 31200
Step 76: 31200 + 416 = 31616
Step 77: 31616 + 416 = 32032
Step 78: 32032 + 416 = 32448
Step 79: 32448 + 416 = 32864
Step 80: 32864 + 416 = 33280
Step 81: 33280 + 416 = 33696
Step 82: 33696 + 416 = 34112
Step 83: 34112 + 416 = 34528
Step 84: 34528 + 416 = 34944
Step 85: 34944 + 416 = 35360
Step 86: 35360 + 416 = 35776
Step 87: 35776 + 416 = 36192
Step 88: 36192 + 416 = 36608
Step 89: 36608 + 416 = 37024
Step 90: 37024 + 416 = 37440
Step 91: 37440 + 416 = 37856
Step 92: 37856 + 416 = 38272
Step 93: 38272 + 416 = 38688
Step 94: 38688 + 416 = 39104
Step 95: 39104 + 416 = 39520
Step 96: 39520 + 416 = 39936
Step 97: 39936 + 416 = 40352
Step 98: 40352 + 416 = 40768
Step 99: 40768 + 416 = 41184
Step 100: 41184 + 416 = 41600
Step 101: 41600 + 416 = 42016
Step 102: 42016 + 416 = 42432
Step 103: 42432 + 416 = 42848
Step 104: 42848 + 416 = 43264
Step 105: 43264 + 416 = 43680
Step 106: 43680 + 416 = 44096
Step 107: 44096 + 416 = 44512
Step 108: 44512 + 416 = 44928
Step 109: 44928 + 416 = 45344
Step 110: 45344 + 416 = 45760
Step 111: 45760 + 416 = 46176
Step 112: 46176 + 416 = 46592
Step 113: 46592 + 416 = 47008
Step 114: 47008 + 416 = 47424
Step 115: 47424 + 416 = 47840
Step 116: 47840 + 416 = 48256
Step 117: 48256 + 416 = 48672
Step 118: 48672 + 416 = 49088
Step 119: 49088 + 416 = 49504
Step 120: 49504 + 416 = 49920
Step 121: 49920 + 416 = 50336
Step 122: 50336 + 416 = 50752
Step 123: 50752 + 416 = 51168
Step 124: 51168 + 416 = 51584
Step 125: 51584 + 416 = 52000
Step 126: 52000 + 416 = 52416
Step 127: 52416 + 416 = 52832
Step 128: 52832 + 416 = 53248
Step 129: 53248 + 416 = 53664
Step 130: 53664 + 416 = 54080
Step 131: 54080 + 416 = 54496
Step 132: 54496 + 416 = 54912
Step 133: 54912 + 416 = 55328
Step 134: 55328 + 416 = 55744
Step 135: 55744 + 416 = 56160
Step 136: 56160 + 416 = 56576
Step 137: 56576 + 416 = 56992
Step 138: 56992 + 416 = 57408
Step 139: 57408 + 416 = 57824
Step 140: 57824 + 416 = 58240
Step 141: 58240 + 416 = 58656
Step 142: 58656 + 416 = 59072
Step 143: 59072 + 416 = 59488
Step 144: 59488 + 416 = 59904
Step 145: 59904 + 416 = 60320
Step 146: 60320 + 416 = 60736
Step 147: 60736 + 416 = 61152
Step 148: 61152 + 416 = 61568
Step 149: 61568 + 416 = 61984
Step 150: 61984 + 416 = 62400
Step 151: 62400 + 416 = 62816
Step 152: 62816 + 416 = 63232
Step 153: 63232 + 416 = 63648
Step 154: 63648 + 416 = 64064
Step 155: 64064 + 416 = 64480
Step 156: 64480 + 416 = 64896
Step 157: 64896 + 416 = 65312
Step 158: 65312 + 416 = 65728
Step 159: 65728 + 416 = 66144
Step 160: 66144 + 416 = 66560
Step 161: 66560 + 416 = 66976
Step 162: 66976 + 416 = 67392
Step 163: 67392 + 416 = 67808
Step 164: 67808 + 416 = 68224
Step 165: 68224 + 416 = 68640
Step 166: 68640 + 416 = 69056
Step 167: 69056 + 416 = 69472
Step 168: 69472 + 416 = 69888
Step 169: 69888 + 416 = 70304
Step 170: 70304 + 416 = 70720
Step 171: 70720 + 416 = 71136

So, 416*171 = 71136