Sure thing, let's get straight to it. We start with 585 and we're going to multiply it by 216, which means adding 585 to itself 216 times.
Step 1: 0 + 585 = 585
Step 2: 585 + 585 = 1170
Step 3: 1170 + 585 = 1755
Step 4: 1755 + 585 = 2340
Step 5: 2340 + 585 = 2925
Step 6: 2925 + 585 = 3510
Step 7: 3510 + 585 = 4095
Step 8: 4095 + 585 = 4680
Step 9: 4680 + 585 = 5265
Step 10: 5265 + 585 = 5850
Step 11: 5850 + 585 = 6435
Step 12: 6435 + 585 = 7020
Step 13: 7020 + 585 = 7605
Step 14: 7605 + 585 = 8190
Step 15: 8190 + 585 = 8775
Step 16: 8775 + 585 = 9360
Step 17: 9360 + 585 = 9945
Step 18: 9945 + 585 = 10530
Step 19: 10530 + 585 = 11115
Step 20: 11115 + 585 = 11700
Step 21: 11700 + 585 = 12285
Step 22: 12285 + 585 = 12870
Step 23: 12870 + 585 = 13455
Step 24: 13455 + 585 = 14040
Step 25: 14040 + 585 = 14625
Step 26: 14625 + 585 = 15210
Step 27: 15210 + 585 = 15795
Step 28: 15795 + 585 = 16380
Step 29: 16380 + 585 = 16965
Step 30: 16965 + 585 = 17550
Step 31: 17550 + 585 = 18135
Step 32: 18135 + 585 = 18720
Step 33: 18720 + 585 = 19305
Step 34: 19305 + 585 = 19890
Step 35: 19890 + 585 = 20475
Step 36: 20475 + 585 = 21060
Step 37: 21060 + 585 = 21645
Step 38: 21645 + 585 = 22230
Step 39: 22230 + 585 = 22815
Step 40: 22815 + 585 = 23400
Step 41: 23400 + 585 = 23985
Step 42: 23985 + 585 = 24570
Step 43: 24570 + 585 = 25155
Step 44: 25155 + 585 = 25740
Step 45: 25740 + 585 = 26325
Step 46: 26325 + 585 = 26910
Step 47: 26910 + 585 = 27495
Step 48: 27495 + 585 = 28080
Step 49: 28080 + 585 = 28665
Step 50: 28665 + 585 = 29250
Step 51: 29250 + 585 = 29835
Step 52: 29835 + 585 = 30420
Step 53: 30420 + 585 = 31005
Step 54: 31005 + 585 = 31590
Step 55: 31590 + 585 = 32175
Step 56: 32175 + 585 = 32760
Step 57: 32760 + 585 = 33345
Step 58: 33345 + 585 = 33930
Step 59: 33930 + 585 = 34515
Step 60: 34515 + 585 = 35100
Step 61: 35100 + 585 = 35685
Step 62: 35685 + 585 = 36270
Step 63: 36270 + 585 = 36855
Step 64: 36855 + 585 = 37440
Step 65: 37440 + 585 = 38025
Step 66: 38025 + 585 = 38610
Step 67: 38610 + 585 = 39195
Step 68: 39195 + 585 = 39780
Step 69: 39780 + 585 = 40365
Step 70: 40365 + 585 = 40950
Step 71: 40950 + 585 = 41535
Step 72: 41535 + 585 = 42120
Step 73: 42120 + 585 = 42705
Step 74: 42705 + 585 = 43290
Step 75: 43290 + 585 = 43875
Step 76: 43875 + 585 = 44460
Step 77: 44460 + 585 = 45045
Step 78: 45045 + 585 = 45630
Step 79: 45630 + 585 = 46215
Step 80: 46215 + 585 = 46800
Step 81: 46800 + 585 = 47385
Step 82: 47385 + 585 = 47970
Step 83: 47970 + 585 = 48555
Step 84: 48555 + 585 = 49140
Step 85: 49140 + 585 = 49725
Step 86: 49725 + 585 = 50310
Step 87: 50310 + 585 = 50895
Step 88: 50895 + 585 = 51480
Step 89: 51480 + 585 = 52065
Step 90: 52065 + 585 = 52650
Step 91: 52650 + 585 = 53235
Step 92: 53235 + 585 = 53820
Step 93: 53820 + 585 = 54405
Step 94: 54405 + 585 = 54990
Step 95: 54990 + 585 = 55575
Step 96: 55575 + 585 = 56160
Step 97: 56160 + 585 = 56745
Step 98: 56745 + 585 = 57330
Step 99: 57330 + 585 = 57915
Step 100: 57915 + 585 = 58500
Step 101: 58500 + 585 = 59085
Step 102: 59085 + 585 = 59670
Step 103: 59670 + 585 = 60255
Step 104: 60255 + 585 = 60840
Step 105: 60840 + 585 = 61425
Step 106: 61425 + 585 = 62010
Step 107: 62010 + 585 = 62595
Step 108: 62595 + 585 = 63180
Step 109: 63180 + 585 = 63765
Step 110: 63765 + 585 = 64350
Step 111: 64350 + 585 = 64935
Step 112: 64935 + 585 = 65520
Step 113: 65520 + 585 = 66105
Step 114: 66105 + 585 = 66690
Step 115: 66690 + 585 = 67275
Step 116: 67275 + 585 = 67860
Step 117: 67860 + 585 = 68445
Step 118: 68445 + 585 = 69030
Step 119: 69030 + 585 = 69615
Step 120: 69615 + 585 = 70200
Step 121: 70200 + 585 = 70785
Step 122: 70785 + 585 = 71370
Step 123: 71370 + 585 = 71955
Step 124: 71955 + 585 = 72540
Step 125: 72540 + 585 = 73125
Step 126: 73125 + 585 = 73710
Step 127: 73710 + 585 = 74295
Step 128: 74295 + 585 = 74880
Step 129: 74880 + 585 = 75465
Step 130: 75465 + 585 = 76050
Step 131: 76050 + 585 = 76635
Step 132: 76635 + 585 = 77220
Step 133: 77220 + 585 = 77805
Step 134: 77805 + 585 = 78390
Step 135: 78390 + 585 = 78975
Step 136: 78975 + 585 = 79560
Step 137: 79560 + 585 = 80145
Step 138: 80145 + 585 = 80730
Step 139: 80730 + 585 = 81315
Step 140: 81315 + 585 = 81900
Step 141: 81900 + 585 = 82485
Step 142: 82485 + 585 = 83070
Step 143: 83070 + 585 = 83655
Step 144: 83655 + 585 = 84240
Step 145: 84240 + 585 = 84825
Step 146: 84825 + 585 = 85410
Step 147: 85410 + 585 = 85995
Step 148: 85995 + 585 = 86580
Step 149: 86580 + 585 = 87165
Step 150: 87165 + 585 = 87750
Step 151: 87750 + 585 = 88335
Step 152: 88335 + 585 = 88920
Step 153: 88920 + 585 = 89505
Step 154: 89505 + 585 = 90090
Step 155: 90090 + 585 = 90675
Step 156: 90675 + 585 = 91260
Step 157: 91260 + 585 = 91845
Step 158: 91845 + 585 = 92430
Step 159: 92430 + 585 = 93015
Step 160: 93015 + 585 = 93600
Step 161: 93600 + 585 = 94185
Step 162: 94185 + 585 = 94770
Step 163: 94770 + 585 = 95355
Step 164: 95355 + 585 = 95940
Step 165: 95940 + 585 = 96525
Step 166: 96525 + 585 = 97110
Step 167: 97110 + 585 = 97695
Step 168: 97695 + 585 = 98280
Step 169: 98280 + 585 = 98865
Step 170: 98865 + 585 = 99450
Step 171: 99450 + 585 = 100035
Step 172: 100035 + 585 = 100620
Step 173: 100620 + 585 = 101205
Step 174: 101205 + 585 = 101790
Step 175: 101790 + 585 = 102375
Step 176: 102375 + 585 = 102960
Step 177: 102960 + 585 = 103545
Step 178: 103545 + 585 = 104130
Step 179: 104130 + 585 = 104715
Step 180: 104715 + 585 = 105300
Step 181: 105300 + 585 = 105885
Step 182: 105885 + 585 = 106470
Step 183: 106470 + 585 = 107055
Step 184: 107055 + 585 = 107640
Step 185: 107640 + 585 = 108225
Step 186: 108225 + 585 = 108810
Step 187: 108810 + 585 = 109395
Step 188: 109395 + 585 = 109980
Step 189: 109980 + 585 = 110565
Step 190: 110565 + 585 = 111150
Step 191: 111150 + 585 = 111735
Step 192: 111735 + 585 = 112320
Step 193: 112320 + 585 = 112905
Step 194: 112905 + 585 = 113490
Step 195: 113490 + 585 = 114075
Step 196: 114075 + 585 = 114660
Step 197: 114660 + 585 = 115245
Step 198: 115245 + 585 = 115830
Step 199: 115830 + 585 = 116415
Step 200: 116415 + 585 = 117000
Step 201: 117000 + 585 = 117585
Step 202: 117585 + 585 = 118170
Step 203: 118170 + 585 = 118755
Step 204: 118755 + 585 = 119340
Step 205: 119340 + 585 = 119925
Step 206: 119925 + 585 = 120510
Step 207: 120510 + 585 = 121095
Step 208: 121095 + 585 = 121680
Step 209: 121680 + 585 = 122265
Step 210: 122265 + 585 = 122850
Step 211: 122850 + 585 = 123435
Step 212: 123435 + 585 = 124020
Step 213: 124020 + 585 = 124605
Step 214: 124605 + 585 = 125190
Step 215: 125190 + 585 = 125775
Step 216: 125775 + 585 = 126360

So, 585*216 = 126360