Let's get this math done. We have 509 and we're going to multiply it by 170. This is the same as taking 509 and adding it to itself 170 times.
Step 1: 0 + 509 = 509
Step 2: 509 + 509 = 1018
Step 3: 1018 + 509 = 1527
Step 4: 1527 + 509 = 2036
Step 5: 2036 + 509 = 2545
Step 6: 2545 + 509 = 3054
Step 7: 3054 + 509 = 3563
Step 8: 3563 + 509 = 4072
Step 9: 4072 + 509 = 4581
Step 10: 4581 + 509 = 5090
Step 11: 5090 + 509 = 5599
Step 12: 5599 + 509 = 6108
Step 13: 6108 + 509 = 6617
Step 14: 6617 + 509 = 7126
Step 15: 7126 + 509 = 7635
Step 16: 7635 + 509 = 8144
Step 17: 8144 + 509 = 8653
Step 18: 8653 + 509 = 9162
Step 19: 9162 + 509 = 9671
Step 20: 9671 + 509 = 10180
Step 21: 10180 + 509 = 10689
Step 22: 10689 + 509 = 11198
Step 23: 11198 + 509 = 11707
Step 24: 11707 + 509 = 12216
Step 25: 12216 + 509 = 12725
Step 26: 12725 + 509 = 13234
Step 27: 13234 + 509 = 13743
Step 28: 13743 + 509 = 14252
Step 29: 14252 + 509 = 14761
Step 30: 14761 + 509 = 15270
Step 31: 15270 + 509 = 15779
Step 32: 15779 + 509 = 16288
Step 33: 16288 + 509 = 16797
Step 34: 16797 + 509 = 17306
Step 35: 17306 + 509 = 17815
Step 36: 17815 + 509 = 18324
Step 37: 18324 + 509 = 18833
Step 38: 18833 + 509 = 19342
Step 39: 19342 + 509 = 19851
Step 40: 19851 + 509 = 20360
Step 41: 20360 + 509 = 20869
Step 42: 20869 + 509 = 21378
Step 43: 21378 + 509 = 21887
Step 44: 21887 + 509 = 22396
Step 45: 22396 + 509 = 22905
Step 46: 22905 + 509 = 23414
Step 47: 23414 + 509 = 23923
Step 48: 23923 + 509 = 24432
Step 49: 24432 + 509 = 24941
Step 50: 24941 + 509 = 25450
Step 51: 25450 + 509 = 25959
Step 52: 25959 + 509 = 26468
Step 53: 26468 + 509 = 26977
Step 54: 26977 + 509 = 27486
Step 55: 27486 + 509 = 27995
Step 56: 27995 + 509 = 28504
Step 57: 28504 + 509 = 29013
Step 58: 29013 + 509 = 29522
Step 59: 29522 + 509 = 30031
Step 60: 30031 + 509 = 30540
Step 61: 30540 + 509 = 31049
Step 62: 31049 + 509 = 31558
Step 63: 31558 + 509 = 32067
Step 64: 32067 + 509 = 32576
Step 65: 32576 + 509 = 33085
Step 66: 33085 + 509 = 33594
Step 67: 33594 + 509 = 34103
Step 68: 34103 + 509 = 34612
Step 69: 34612 + 509 = 35121
Step 70: 35121 + 509 = 35630
Step 71: 35630 + 509 = 36139
Step 72: 36139 + 509 = 36648
Step 73: 36648 + 509 = 37157
Step 74: 37157 + 509 = 37666
Step 75: 37666 + 509 = 38175
Step 76: 38175 + 509 = 38684
Step 77: 38684 + 509 = 39193
Step 78: 39193 + 509 = 39702
Step 79: 39702 + 509 = 40211
Step 80: 40211 + 509 = 40720
Step 81: 40720 + 509 = 41229
Step 82: 41229 + 509 = 41738
Step 83: 41738 + 509 = 42247
Step 84: 42247 + 509 = 42756
Step 85: 42756 + 509 = 43265
Step 86: 43265 + 509 = 43774
Step 87: 43774 + 509 = 44283
Step 88: 44283 + 509 = 44792
Step 89: 44792 + 509 = 45301
Step 90: 45301 + 509 = 45810
Step 91: 45810 + 509 = 46319
Step 92: 46319 + 509 = 46828
Step 93: 46828 + 509 = 47337
Step 94: 47337 + 509 = 47846
Step 95: 47846 + 509 = 48355
Step 96: 48355 + 509 = 48864
Step 97: 48864 + 509 = 49373
Step 98: 49373 + 509 = 49882
Step 99: 49882 + 509 = 50391
Step 100: 50391 + 509 = 50900
Step 101: 50900 + 509 = 51409
Step 102: 51409 + 509 = 51918
Step 103: 51918 + 509 = 52427
Step 104: 52427 + 509 = 52936
Step 105: 52936 + 509 = 53445
Step 106: 53445 + 509 = 53954
Step 107: 53954 + 509 = 54463
Step 108: 54463 + 509 = 54972
Step 109: 54972 + 509 = 55481
Step 110: 55481 + 509 = 55990
Step 111: 55990 + 509 = 56499
Step 112: 56499 + 509 = 57008
Step 113: 57008 + 509 = 57517
Step 114: 57517 + 509 = 58026
Step 115: 58026 + 509 = 58535
Step 116: 58535 + 509 = 59044
Step 117: 59044 + 509 = 59553
Step 118: 59553 + 509 = 60062
Step 119: 60062 + 509 = 60571
Step 120: 60571 + 509 = 61080
Step 121: 61080 + 509 = 61589
Step 122: 61589 + 509 = 62098
Step 123: 62098 + 509 = 62607
Step 124: 62607 + 509 = 63116
Step 125: 63116 + 509 = 63625
Step 126: 63625 + 509 = 64134
Step 127: 64134 + 509 = 64643
Step 128: 64643 + 509 = 65152
Step 129: 65152 + 509 = 65661
Step 130: 65661 + 509 = 66170
Step 131: 66170 + 509 = 66679
Step 132: 66679 + 509 = 67188
Step 133: 67188 + 509 = 67697
Step 134: 67697 + 509 = 68206
Step 135: 68206 + 509 = 68715
Step 136: 68715 + 509 = 69224
Step 137: 69224 + 509 = 69733
Step 138: 69733 + 509 = 70242
Step 139: 70242 + 509 = 70751
Step 140: 70751 + 509 = 71260
Step 141: 71260 + 509 = 71769
Step 142: 71769 + 509 = 72278
Step 143: 72278 + 509 = 72787
Step 144: 72787 + 509 = 73296
Step 145: 73296 + 509 = 73805
Step 146: 73805 + 509 = 74314
Step 147: 74314 + 509 = 74823
Step 148: 74823 + 509 = 75332
Step 149: 75332 + 509 = 75841
Step 150: 75841 + 509 = 76350
Step 151: 76350 + 509 = 76859
Step 152: 76859 + 509 = 77368
Step 153: 77368 + 509 = 77877
Step 154: 77877 + 509 = 78386
Step 155: 78386 + 509 = 78895
Step 156: 78895 + 509 = 79404
Step 157: 79404 + 509 = 79913
Step 158: 79913 + 509 = 80422
Step 159: 80422 + 509 = 80931
Step 160: 80931 + 509 = 81440
Step 161: 81440 + 509 = 81949
Step 162: 81949 + 509 = 82458
Step 163: 82458 + 509 = 82967
Step 164: 82967 + 509 = 83476
Step 165: 83476 + 509 = 83985
Step 166: 83985 + 509 = 84494
Step 167: 84494 + 509 = 85003
Step 168: 85003 + 509 = 85512
Step 169: 85512 + 509 = 86021
Step 170: 86021 + 509 = 86530

So, 509*170 = 86530